package/libglib2: add license hash

Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/libglib2/libglib2.hash

@@ -1,2 +1,4 @@
 # https://download.gnome.org/sources/glib/2.54/glib-2.54.2.sha256sum
 sha256  bb89e5c5aad33169a8c7f28b45671c7899c12f74caf707737f784d7102758e6c  glib-2.54.2.tar.xz
+# License files, locally calculated
+sha256	dc626520dcd53a22f727af3ee42c770e56c97a64fe3adb063799d8ab032fe551  COPYING