gcr: Fix build, link against glib
gcr: Fix build, link against glib

https://bugzilla.gnome.org/show_bug.cgi?id=662647

Distrotech/gcr,Distrotech/gcr,stefwalter/gcr,stefwalter/gcr,stefwalter/gcr,Distrotech/gcr,stefwalter/gcr,Distrotech/gcr