* 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.
* dbus/dbus-sysdeps.c (_dbus_sleep_milliseconds): new function
(_dbus_poll): new function
* dbus/dbus-internals.h (_DBUS_STRUCT_OFFSET): new macro
copied from GLib
* bus/loop.c: initial code for the daemon main loop
