gnu: pcre: Update replacement to 8.41 [fixes CVE-2017-{7244,7245,7246}].

* gnu/packages/pcre.scm (pcre)[replacement]: Update to pcre-8.41.
(pcre/fixed): Replace with ...
(pcre-8.41): ... new variable.

gnu/packages/pcre.scm

@@ -34,7 +34,7 @@
   (package
    (name "pcre")
    (version "8.40")
-   (replacement pcre/fixed)
+   (replacement pcre-8.41)
    (source (origin
             (method url-fetch)
             (uri (list
@@ -72,12 +72,20 @@ POSIX regular expression API.")
    (license license:bsd-3)
    (home-page "http://www.pcre.org/")))
 
-(define pcre/fixed
+(define pcre-8.41
   (package
     (inherit pcre)
+    (version "8.41")
     (source (origin
-              (inherit (package-source pcre))
-              (patches (search-patches "pcre-CVE-2017-7186.patch"))))))
+              (method url-fetch)
+              (uri (list (string-append "mirror://sourceforge/pcre/pcre/"
+                                        version "/pcre-" version ".tar.bz2")
+                         (string-append "ftp://ftp.csx.cam.ac.uk"
+                                        "/pub/software/programming/pcre/"
+                                        "pcre-" version ".tar.bz2")))
+              (sha256
+               (base32
+                "0c5m469p5pd7jip621ipq6hbgh7128lzh7xndllfgh77ban7wb76"))))))
 
 (define-public pcre2
   (package