fix build when WSYSTYPE=wayland in local cfg

src/cmd/fontsrv/freetyperules.sh

@@ -1,6 +1,6 @@
 #!/bin/sh
 
-if [ "x$1" = "xx11" ]; then
+if [ "x$1" = "xx11" -o "x$1" = "xwayland" ]; then
 	if [ "x$2" = "x" ]; then
 		i="-I/usr/include"
 	else

src/cmd/fontsrv/mkwsysrules.sh

@@ -48,7 +48,7 @@ echo 'WSYSTYPE='$WSYSTYPE
 echo 'X11='$X11
 echo 'X11H='$X11H
 
-if [ $WSYSTYPE = x11 ]; then
+if [ $WSYSTYPE = x11 -o $WSYSTYPE = wayland ]; then
 	echo 'CFLAGS=$CFLAGS '$X11H
 	echo 'HFILES=$HFILES $XHFILES'
 	XO=`ls x11-*.c 2>/dev/null | sed 's/\.c$/.o/'`

src/cmd/fontsrv/wayland.c

@@ -0,0 +1 @@
+#include "x11.c"