Log Message:
security/dirmngr: compatibility with libgcrypt>=1.6.0

Before 1.6.0 version, libgcrypt called pth_init() on it's own,
in later version dirmngr has to be the one to call pth_init().
With this dirmngr actually works (does not seg fault immediately).

Since it's a runtime problem, PKGREVISION bumped.

OK@ wiz