Log Message:
this uses functions from libgcrypt and libgpg-error so include their
buildlink3.mk files.

on NetBSD and others this was building and working but resolving symbols
from libgcrypt and libgpg-error indirectly via libspectrum. this is not
good practice, you must always explicitly link against libraries for the
functions you need.

fixes the build on Solaris.

bump PKGREVISION.