gpgme: fix configure if 'import distutils' causes output on stderr
There are a number of reasons that importing a module could cause output on
stderr that isn't a fatal error (compatibilty problems with inputrc, or encoding
warnings) so backport a patch from autoconf-archive to only check the exit code
instead of asserting that stderr is empty.
[ YOCTO #11231 ]
Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
