Patches for libgpg-error on Minerva

0001-Include-errno.h.patch

Include errno.h

0002-Stub-out-the-gpgrt-lock-impl.patch

Stub out the gpgrt lock impl

0003-libtool-Enable-shared-library-support-for-Minerva.patch

libtool: Enable shared library support for Minerva

For some odd reason, libtool handles the configuration for shared libraries entirely statically and in its configure script. If no shared library support is "present", building shared libraries is disabled entirely.

Fix that by just adding the appropriate configuration options for minerva. This allows us to finally create dynamic libraries automatically using libtool, without having to manually link the static library into a shared library.