Add XME hooks to X11 driver instead of relying on libxme...libxme hasn't changed in five years, and it's a small .c file that just calls into the X11 dependencies we already use elsewhere. Including it directly allows us to make use of the dynamic X11 code. Fixes Bugzilla #41. --ryan.

## Makefile.am for SDL using the Network Audio System sound driver

noinst_LTLIBRARIES = libaudio_nas.la
libaudio_nas_la_SOURCES = $(SRCS)

# The SDL audio driver sources
SRCS =	SDL_nasaudio.c	\
	SDL_nasaudio.h