fontserv: fix build on FreeBSD 9.1

R=rsc
https://codereview.appspot.com/7095050
diff --git a/INSTALL b/INSTALL
index a0e208e..8bc208b 100755
--- a/INSTALL
+++ b/INSTALL
@@ -45,6 +45,11 @@
 echo "* Compiler version:"
 9c -v 2>&1 | grep -v 'Configured with:' | grep -i version | sed 's/^/	/'
 
+if [ `uname` = FreeBSD ]; then
+       echo "* Running on FreeBSD, adjusting linker flags"
+       echo "LDFLAGS='-L/usr/local/lib'" >> $PLAN9/config
+fi
+
 if [ `uname` = OpenBSD ]; then
        echo "* Running on OpenBSD, adjusting linker flags"
        echo "LDFLAGS='-L/usr/X11R6/lib -pthread'" >> $PLAN9/config
@@ -92,7 +97,7 @@
 if [ `uname` != Darwin ]; then
 	# Determine whether fontsrv X11 files are available.
 	rm -f a.out
-	gcc -o a.out -c -Iinclude -I/usr/include -I/usr/include/freetype2 src/cmd/fontsrv/x11.c >/dev/null 2>&1
+	gcc -o a.out -c -Iinclude -I/usr/include -I/usr/local/include -I/usr/include/freetype2 -I/usr/local/include/freetype2 src/cmd/fontsrv/x11.c >/dev/null 2>&1
 	if [ -f a.out ]; then
 		echo "	fontsrv dependencies found."
 		echo "FONTSRV=fontsrv" >>$PLAN9/config