locale: symlink identical langpack LC_CTYPEs to the C.utf8 version
    
    Almost half the LC_CTYPE files in langpacks are identical to the C.utf8
    variant which is installed by default.  This commit converts these to
    symbolic links instead, saving ~350K of installed size per langpack.
    
    Rawhide commit: a0bdca4f3f0b5d8fa83b94baa29aee593a6185d7
    
    Also:
    
     * locale: make install-locale-files instead of install-locales
       - Drop glibc-fedora-localedef.patch
       - Rawhide commit: cf979ff812591e7190025c9454ab73a9c31baa5b
    
     * localedef: Handle symbolic links when generating locale-archive
       - Add glibc-localedef-handle-symlinks.patch
       - Upstream commit: ea89d5bbd9e5e514b606045d909e6ab87d851c88