gq-1.2.3-bp156.4.8

- Export -fcommon to optflags, fixes build with gcc 10. Yes this is
  a cheat, but good enough for this more or less abandoned package.

- Add gq-glib-2.31.patch: Fix build with glib 2.31.

- Add libgcrypt-devel BuildRequires: it has been forgotten for some
  reason.
- Drop gq-1.2.3-ia64.diff: the patch never made it upstream, and is
  actually only useful if we turn on debugging. Instead, pass
  - -disable-debugging to configure.
- Add gq-fix-linking.patch: fix linking issue, taken from git.
- Add call to autoreconf for above patch.

- Call relevant macros in %post/%postun:
  + %desktop_database_post/postun because the package ships at
    least one desktop file.
  + %mime_database_post/postun because the package ships a mime
    type definition.

- Change gnome-keyring-devel BuildRequires to
  libgnome-keyring-devel on 11.3 and later, following the module
  split upstream.
- Remove AutoReqProv: it's default now.

- make patch0 usage consistent

- Remove --with-kerberos-prefix from configure. Newest krb5
  packages do no longer provide the expected libdes425.

- Resurrect gq (bnc #9512)