* bus/connection.c: implement routines for handling connections,
	first thing is keeping a list of owned services on each connection
	and setting up watches etc.

	* bus/services.c: implement a mapping from service names to lists
	of connections

	* dbus/dbus-hash.c: add DBUS_HASH_POINTER

	* dbus/dbus-threads.c (dbus_static_mutex_lock): add functions
	to use static mutexes for global data

	* dbus/dbus-connection.c (dbus_connection_set_data): add new
	collection of functions to set/get application-specific data
	on the DBusConnection.