get rid of XFree86LOADER, XFree86Server, XFree86Module, and IN_MODULE

Get rid of almost all uses of these definitions.  They're still defined for
delinquent out-of-tree drivers, and also for the Mesa build.  As well as
for miinitext.c.  But largely gone.

mi/mibitblt.c

@@ -360,7 +360,7 @@ miGetPlane(
 		 * Now get the bit and insert into a bitmap in XY format.
 		 */
 		bit = (pixel >> planeNum) & 1;
-#ifndef XFree86Server
+#if 0
 		/* XXX assuming bit order == byte order */
 #if BITMAP_BIT_ORDER == LSBFirst
 		bit <<= k;