add grapher to distribution

git-svn-id: https://google-guice.googlecode.com/svn/trunk@1465 d779f126-a31b-0410-b53b-1d3aecad763e
diff --git a/build.properties b/build.properties
index 0805cec..d8bf543 100644
--- a/build.properties
+++ b/build.properties
@@ -12,6 +12,7 @@
 lifecycle.src.dir=extensions/lifecycle/src
 persist.src.dir=extensions/persist/src
 struts2.src.dir=extensions/struts2/src
+grapher.src.dir=extensions/grapher/src
 build.dir=build
 javadoc.packagenames=com.google.inject,com.google.inject.spi,\
   com.google.inject.matcher,\