Werner Koch authored Dec 03, 2018 and Kevin J. McCarthy committed Dec 04, 2018

The wrapper is much more convenient and there is no need to sometimes
use gpgme_new directly.  The perceived advantage on not bailing out in
an out-of-core condition is not realistic because other small amounts
of memory are allocated all over mutt anyway and thus function will
terminate the process as well.

This patch also changes the minimum version of gpgme to 1.4.0.  This
is so that we can always pass NULL to functions like gpgme_release.
Further 1.4.0 has new functions which we may soon like to use.