gnu: Fix typos in descriptions.

* gnu/packages/admin.scm (di)[description]: Likewise.
* gnu/packages/bioinformatics.scm (r-annotate)[description]: Likewise.
* gnu/packages/datastructures.scm (sparsehash)[description]: Likewise.
* gnu/packages/dns.scm (knot)[description]: Likewise.
* gnu/packages/emacs.scm (emacs-idle-highlight)[synopsis, description]:
Likewise.
* gnu/packages/gnome.scm (libpeas)[description]: Likewise.
* gnu/packages/gtk.scm (python2-pygtk)[description]: Likewise.
* gnu/packages/kde-frameworks.scm (kactivities)[description]: Fix typo.
* gnu/packages/libevent.scm (perl-anyevent)[description]: Likewise.
* gnu/packages/machine-learning.scm (ghmm)[description]: Likewise.
* gnu/packages/mail.scm (mlmmj)[description]: Likewise.
* gnu/packages/maths.scm (vc)[description]: Likewise.
* gnu/packages/music.scm (gx-super-fuzz-lv2)[description]: Likewise.
* gnu/packages/networking.scm (nload)[description]: Likewise.
* gnu/packages/python.scm (python-execnet)[description]: Likewise.
* gnu/packages/terminals.scm (tilda)[description]: Likewise.
* gnu/packages/python.scm (python-execnet, python-tables)
(python2-coverage-test-runner, python2-rope)[description]: Likewise.

gnu/packages/admin.scm

@@ -1763,7 +1763,7 @@ a new command using the matched rule, and runs it.")
      "'di' is a disk information utility, displaying everything
 (and more) that your @code{df} command does.  It features the ability to
 display your disk usage in whatever format you prefer.  It is designed to be
-highly portable.  Great for heterogenous networks.")
+highly portable.  Great for heterogeneous networks.")
     (license license:zlib)))
 
 (define-public cbatticon

gnu/packages/bioinformatics.scm

@@ -5406,7 +5406,7 @@ data types as well.")
     (home-page
      "http://bioconductor.org/packages/annotate")
     (synopsis "Annotation for microarrays")
-    (description "This package provides R enviroments for the annotation of
+    (description "This package provides R environments for the annotation of
 microarrays.")
     (license license:artistic2.0)))
 

gnu/packages/datastructures.scm

@@ -65,7 +65,7 @@ and heaps.")
      "This library contains several hash-map implementations, similar in API
 to SGI's @code{hash_map} class, but with different performance
 characteristics.  @code{sparse_hash_map} uses very little space overhead, 1-2
-bits per entry.  @code{dense_hash_map} is very fast, particulary on lookup.
+bits per entry.  @code{dense_hash_map} is very fast, particularly on lookup.
 @code{sparse_hash_set} and @code{dense_hash_set} are the set versions of these
 routines.  All these implementation use a hashtable with internal quadratic
 probing.  This method is space-efficient -- there is no pointer overhead --

gnu/packages/dns.scm

@@ -377,7 +377,7 @@ Extensions} (DNSSEC).")
                             "/etc/bash_completion.d"))))
     (home-page "https://www.knot-dns.cz/")
     (synopsis "Authoritative DNS name server")
-    (description "Knot DNS is an authorative name server for the @dfn{Domain
+    (description "Knot DNS is an authoritative name server for the @dfn{Domain
 Name System} (DNS), designed to meet the needs of root and @dfn{top-level
 domain} (TLD) name servers.  It is implemented as a threaded daemon and uses a
 number of programming techniques to improve speed.  For example, the responder

gnu/packages/emacs.scm

@@ -4059,10 +4059,10 @@ number on the left margin in Emacs.")
          "0kdv10hrgqpskjh0zvpnzwlkn5bccnqxas62gkws6njln57bf8nl"))))
     (build-system emacs-build-system)
     (home-page "https://www.emacswiki.org/emacs/IdleHighlight")
-    (synopsis "Highlights all occurences of the word the point is on")
+    (synopsis "Highlights all occurrences of the word the point is on")
     (description
      "This Emacs package provides @code{idle-highlight-mode} that sets
- an idle timer to highlight all occurences in the buffer of the word under
+ an idle timer to highlight all occurrences in the buffer of the word under
  the point.")
     (license license:gpl3+)))
 

gnu/packages/gnome.scm

@@ -21,7 +21,7 @@
 ;;; Copyright © 2016 Alex Griffin <a@ajgrf.com>
 ;;; Copyright © 2016 ng0 <ng0@we.make.ritual.n0.is>
 ;;; Copyright © 2016 David Craven <david@craven.ch>
-;;; Copyright © 2016 Tobias Geerinckx-Rice <me@tobias.gr>
+;;; Copyright © 2016, 2017 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2017 Thomas Danckaert <post@thomasdanckaert.be>
 ;;; Copyright © 2017 Hartmut Goebel <h.goebel@crazy-compilers.com>
 ;;;
@@ -863,11 +863,11 @@ some form of information without getting in the user's way.")
     (home-page "https://wiki.gnome.org/Libpeas")
     (synopsis "GObject plugin system")
     (description
-     "Libpeas is a gobject-based plugins engine, and is targetted at giving
+     "Libpeas is a gobject-based plugin engine, targeted at giving every
-every application the chance to assume its own extensibility.  It also has a
+application the chance to assume its own extensibility.  It also has a set of
-set of features including, but not limited to: multiple extension points; on
+features including, but not limited to: multiple extension points; on-demand
-demand (lazy) programming language support for C, Python and JS; simplicity of
+(lazy) programming language support for C, Python and JS; simplicity of the
-the API.")
+API.")
     (license license:lgpl2.0+)))
 
 (define-public gtkglext

gnu/packages/gtk.scm

@@ -1210,7 +1210,7 @@ extensive documentation, including API reference and a tutorial.")
     (synopsis "Python bindings for GTK+")
     (description
      "PyGTK allows you to write full featured GTK programs in Python.  It is
-targetted at GTK 2.x, and can be used in conjunction with gnome-python to
+targeted at GTK 2.x, and can be used in conjunction with gnome-python to
 write GNOME applications.")
     (license license:lgpl2.1+)))
 

gnu/packages/kde-frameworks.scm

@@ -1426,7 +1426,7 @@ from DocBook files.")
     (synopsis "Extract metadata from different fileformats")
     (description "KFileMetaData provides a simple library for extracting the
 text and metadata from a number of different files.  This library is typically
-used by file indexers to retreive the metadata.  This library can also be used
+used by file indexers to retrieve the metadata.  This library can also be used
 by applications to write metadata.")
     (license (list license:lgpl2.0 license:lgpl2.1 license:lgpl3))))
 
@@ -1750,7 +1750,7 @@ maintaining an index of the contents of your files.")
     (home-page "https://community.kde.org/Frameworks")
     (synopsis "Core components for the KDE Activity concept")
     (description "KActivities provides the infrastructure needed to manage a
-user's activites, allowing them to switch between tasks, and for applications
+user's activities, allowing them to switch between tasks, and for applications
 to update their state to match the user's current activity.  This includes a
 daemon, a library for interacting with that daemon, and plugins for integration
 with other frameworks.")

gnu/packages/libevent.scm

@@ -182,7 +182,7 @@ resolution, asynchronous file system operations, and threading primitives.")
      "API for I/O, timer, signal, child process and completion events")
     (description
      "This module allows using a variety of events without forcing module
-authors to pick a specific event loop, and without noticable overhead.
+authors to pick a specific event loop, and without noticeable overhead.
 Currently supported event loops are EV, Event, Glib/Gtk2, Tk, Qt,
 @code{Event::Lib}, Irssi, @code{IO::Async} and POE (and thus also WxWidgets
 and Prima).  It also comes with a very fast Pure Perl event loop that does

gnu/packages/machine-learning.scm

@@ -207,7 +207,7 @@ classification.")
       (description
        "The General Hidden Markov Model library (GHMM) is a C library with
 additional Python bindings implementing a wide range of types of @dfn{Hidden
-Markov Models} (HMM) and algorithms: discrete, continous emissions, basic
+Markov Models} (HMM) and algorithms: discrete, continuous emissions, basic
 training, HMM clustering, HMM mixtures.")
       (license license:lgpl2.0+))))
 

gnu/packages/mail.scm

@@ -2053,7 +2053,7 @@ the GNU Mailman 3 REST API.")
     (description
      "Mlmmj is a simple and slim mailing list manager (MLM) inspired by ezmlm.
 It works with many different Mail Transport Agents (MTAs) and is simple for a
-system adminstrator to install, configure and integrate with other software.
+system administrator to install, configure and integrate with other software.
 As it uses very few resources, and requires no daemons, it is ideal for
 installation on systems where resources are limited.  Its features include:
 @enumerate

gnu/packages/music.scm

@@ -2526,7 +2526,7 @@ parallel with a DarkBooster, followed by a volume control.")))
     (synopsis "Fuzz effect modelled after the UniVox SuperFuzz")
     (description "This package provides the LV2 plugin \"GxSuperFuzz\", an
 analog simulation of the UniVox SuperFuzz pedal.  In this simulation the trim
-pot, which is usualy in the housing, is exposed as a control parameter.  It
+pot, which is usually in the housing, is exposed as a control parameter.  It
 adjusts the amount of harmonics.")))
 
 (define-public gx-vintage-fuzz-master-lv2

gnu/packages/networking.scm

@@ -380,7 +380,7 @@ intended as a substitute for the PPPStatus and EthStatus projects.")
     (description
      "Nload is a console application which monitors network traffic and
 bandwidth usage in real time.  It visualizes the in- and outgoing traffic using
-two graphs and provides additional info like total amount of transfered data
+two graphs, and provides additional info like total amount of transferred data
 and min/max network usage.")
     (license license:gpl2+)))
 

gnu/packages/python.scm

@@ -7089,7 +7089,7 @@ printing of sub-tables by specifying a row range.")
     (home-page "http://www.pytables.org/")
     (synopsis "Hierarchical datasets for Python")
     (description "PyTables is a package for managing hierarchical datasets and
-designed to efficently cope with extremely large amounts of data.")
+designed to efficiently cope with extremely large amounts of data.")
     (license license:bsd-3)))
 
 (define-public python2-tables
@@ -8691,7 +8691,7 @@ pure Python module that works on virtually all Python versions.")
     (description "Execnet provides a share-nothing model with
 channel-send/receive communication for distributing execution across many
 Python interpreters across version, platform and network barriers.  It has a
-minimal and fast API targetting the following uses:
+minimal and fast API targeting the following uses:
 @enumerate
 @item distribute tasks to (many) local or remote CPUs
 @item write and deploy hybrid multi-process applications
@@ -10790,7 +10790,7 @@ Python.  It generates C++ code and a Makefile."))
     (description "Rope is a refactoring library for Python.  It facilitates
 the renaming, moving and extracting of attributes, functions, modules, fields
 and parameters in Python 2 source code.  These refactorings can also be applied
-to occurences in strings and comments.")
+to occurrences in strings and comments.")
     (license license:gpl2)))
 
 (define-public python-py3status
@@ -13832,7 +13832,7 @@ in other versions.")
     (home-page "https://liw.fi/coverage-test-runner/")
     (synopsis "Python module for running unit tests")
     (description "@code{CoverageTestRunner} is a python module for running
-unit tests and failing them if the unit test module does not excercise all
+unit tests and failing them if the unit test module does not exercise all
 statements in the module it tests.")
     (license license:gpl3+)))
 

gnu/packages/terminals.scm

@@ -85,7 +85,7 @@
 gnome-terminal (GNOME) or Konsole (KDE), with the difference that it drops down
 from the edge of a screen when a certain configurable hotkey is pressed.  This
 is similar to the built-in consoles in some applications.  Tilda is highly
-configureable through a graphical wizard.")
+configurable through a graphical wizard.")
     (home-page "https://github.com/lanoxx/tilda")
     (license license:gpl2+)))