Also substitute @MAKE_PROGRAM@ with $MAKE_PROGRAM.

This fixes one build problem on my Slackware9 system.

XFree86/Makefile.common

@@ -1,4 +1,4 @@
-# $NetBSD: Makefile.common,v 1.18 2003/09/01 21:15:44 xtraeme Exp $
+# $NetBSD: Makefile.common,v 1.19 2003/09/28 13:34:55 marc Exp $
 #
 # XBUILD_DIRS is the group of directories under ${WRKSRC} that will 
 #   be built in.
@@ -54,6 +54,7 @@ post-extract:
 	@${SED} \
 		-e "s|@BLNK@|${BUILDLINK_DIR}|g" \
 		-e "s|@MAKE@|${MAKE_PROGRAM}|g" \
+		-e "s|@MAKE_PROGRAM@|${MAKE_PROGRAM}|g" \
 		-e "s|@IMAKE@|${IMAKE}|g" \
 		-e "s|@RMAN@|${X11BASE}/bin/rman|g" \
 		-e "s|@MKHTMLINDEX@|${X11BASE}/bin/mkhtmlindex|g" \