Make cheese_camera_device_monitor_set_up_device static
Simplify looping over GStrv
Make static string array const
Fix some memory leaks in cheese_fileutil_init()
Fix memory leak when creating a new CheeseCamera
Fix cheese_thumb_view_append_item() memory leaks

Fix several memory leaks found with valgrind.
Fix memory leak in cheese_camera_device_get_caps()
Depend on GTK+ 3.10.0 for GtkHeaderBar