Add explicit dependencies (Xorg_DEPENDENCIES = ) on the internal libraries

(such as libcw.la) that we link into the server, causing it to be rebuild
automatically when they're updated.  Some system libraries are included, but
don't appear to cause any harm.  You would think this would be automatic...

hw/xfree86/Makefile.am

@@ -43,6 +43,9 @@ XORG_LIBS = \
 	    dixmods/libdixmods.la \
             @XORG_LIBS@
 
+Xorg_DEPENDENCIES = \
+	$(XORG_LIBS)
+
 Xorg_LDADD = $(XORG_LIBS) \
              @XSERVER_LIBS@ \
 	     dixmods/libxorgxkb.la