Add "tools" to "make all"



git-svn-id: http://skia.googlecode.com/svn/trunk@1688 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/Makefile b/Makefile
index f298df8..037836a 100644
--- a/Makefile
+++ b/Makefile
@@ -40,7 +40,7 @@
 default: all
 
 .PHONY: all
-all: SampleApp bench gm tests
+all: SampleApp bench gm tests tools
 
 .PHONY: clean
 clean: