* components/music/esd-audio.c: (esdout_loop): Add return NULL to
	make gcc happy.

	* components/music/mpg123.c: (decode_loop): Add return NULL to
	make gcc happy.

	* libnautilus-extensions/nautilus-customization-data.c: Add
	missing include of <stdlib.h>

	* libnautilus-extensions/nautilus-file.c: (group_includes_user):
	Cast the gid to (gid_t)

	* libnautilus-extensions/nautilus-sound.c: Include <wait.h> only
	if we have it.  Otherwise try <sys/wait.h>.

	* src/nautilus-bookmark-parsing.c: Add	missing include of <stdlib.h>