gnu: Rename 'guile-3.0/fixed' to 'guile-3.0/pinned'.

* gnu/packages/guile.scm: Rename variable 'guile-3.0/fixed' to
'guile-3.0/pinned', add deprecation.
* etc/release-manifest.scm (%packages-to-cross-build): Replace
'guile-3.0/fixed' with 'guile-3.0/pinned'.
* gnu/packages/autotools.scm (make-autoconf-wrapper)[inputs]: Likewise.
* gnu/packages/commencement.scm (guile-final): Likewise.

Signed-off-by: Liliana Marie Prikler <liliana.prikler@gmail.com>

etc/release-manifest.scm

@@ -82,7 +82,7 @@ TARGET."
   ;; Packages that must be cross-buildable from x86_64-linux.
   ;; FIXME: Add (@ (gnu packages gcc) gcc) when <https://bugs.gnu.org/40463>
   ;; is fixed.
-  (append (list (@ (gnu packages guile) guile-3.0/fixed))
+  (append (list (@ (gnu packages guile) guile-3.0/pinned))
           (map specification->package
                '("coreutils" "grep" "sed" "findutils" "diffutils" "patch"
                  "gawk" "gettext" "gzip" "xz"

gnu/packages/autotools.scm

@@ -209,7 +209,7 @@ files with a system-specific shebang."
     (inputs `(("guile"
                ;; XXX: Kludge to hide the circular dependency.
                ,(module-ref (resolve-interface '(gnu packages guile))
-                            'guile-3.0/fixed))
+                            'guile-3.0/pinned))
               ("autoconf" ,autoconf)
               ("bash" ,bash-minimal)))
     (arguments

gnu/packages/commencement.scm

@@ -3623,7 +3623,7 @@ exec ~a/bin/~a-~a -B~a/lib -Wl,-dynamic-linker -Wl,~a/~a \"$@\"~%"
   ;; This package must be public because other modules refer to it.  However,
   ;; mark it as hidden so that 'fold-packages' ignores it.
   (with-boot4 (hidden-package
-               (package-with-bootstrap-guile guile-3.0/fixed))))
+               (package-with-bootstrap-guile guile-3.0/pinned))))
 
 (define-public glibc-utf8-locales-final
   ;; Now that we have GUILE-FINAL, build the UTF-8 locales.  They are needed

gnu/packages/guile.scm

@@ -419,7 +419,11 @@ without requiring the source code to be rewritten.")
                         "GUILE_OPTIMIZATIONS = -O1 -Oresolve-primitives -Ocps\n")))))
                '())))))))
 
-(define-public guile-3.0/fixed
+;;; The symbol guile-3.0/fixed should be used when guile-3.0 needs fixes
+;;; (security or else) and this deprecation could be removed.
+(define-deprecated/public-alias guile-3.0/fixed guile-3.0/pinned)
+
+(define-public guile-3.0/pinned
   ;; A package of Guile that's rarely changed.  It is the one used in the
   ;; `base' module, and thus changing it entails a full rebuild.
   (package