* dbus/dbus-server.c, dbus/dbus-server-unix.c: change semantics so
	you must disconnect before unref, since locking and other things
	are screwed up otherwise. Fix assorted other locking stuff.

	* dbus/dbus-signature.c (dbus_signature_iter_get_element_type):
	fix compilation

	* dbus/dbus-threads-internal.h: move the mutex/condvar wrappers
	into a private header and don't export from the library

	* throughout - call _dbus_thread_stuff vs. dbus_thread_stuff