common: Implicitly do a gpgconf --create-socketdir.

common: Implicitly do a gpgconf --create-socketdir.

* common/homedir.c (_gnupg_socketdir_internal): Create the
sub-directory.
--

Although there is no auto cleanup (yet) this should be helpful.  Let's
see whether possibly leaving stale directories around is better than
running into trouble when --create-socketdir was not used.

Signed-off-by: Werner Koch <wk@gnupg.org>
(cherry picked from commit 26086b362ff47d21b1abefaf674a6464bf0a8921)

Gbp-Pq: Name 0055-common-Implicitly-do-a-gpgconf-create-socketdir.patch