* dbus/dbus-message.c, dbus/dbus-marshal.c: add 64-bit integer
	support, and do some code cleanups to share more code and
	speed up array marshal/demarshal.

	* dbus-1.0.pc.in (Cflags): put libdir include file in cflags

	* configure.in: generate dbus-arch-deps.h

	* dbus/dbus-protocol.h (DBUS_TYPE_INT64, DBUS_TYPE_UINT64): add
	64-bit typecodes