configure: Require GLib 2.16 for GIO
configure: Require GLib 2.16 for GIO

GIO is required by the shm example, require it.

ahmedammar/skype_farsight2,kakaroto/farstream,tieto/farstream,kakaroto/farstream,tieto/farstream,shadeslayer/farstream,pexip/farstream,kakaroto/farstream,kakaroto/farstream,shadeslayer/farstream,ahmedammar/skype_farsight2,tieto/farstream,pexip/farstream,shadeslayer/farstream,tieto/farstream,pexip/farstream,tieto/farstream,shadeslayer/farstream,ahmedammar/skype_farsight2,ahmedammar/skype_farsight2,pexip/farstream