GIO api update.
GIO api update.

GLib.File.load_contents() doesn't return unowned string anymore.

svn path=/trunk/; revision=399

Pelagicore/Media-Manager-Rygel-patched,Pelagicore/Media-Manager-Rygel-patched,GNOME/rygel,GNOME/rygel,Pelagicore/Media-Manager-Rygel-patched,GNOME/rygel,luisbg/rygel,Tarnyko/rygel,jku/rygel,jku/rygel,Tarnyko/rygel