Issue 552: (step 1) move core code to its own subdirectory

git-svn-id: https://google-guice.googlecode.com/svn/trunk@1300 d779f126-a31b-0410-b53b-1d3aecad763e
diff --git a/build.properties b/build.properties
index dbab591..57a175e 100644
--- a/build.properties
+++ b/build.properties
@@ -1,6 +1,6 @@
 lib.dir=lib
-src.dir=src
-test.dir=test
+src.dir=core/src
+test.dir=core/test
 servlet.src.dir=extensions/servlet/src
 spring.src.dir=extensions/spring/src
 assistedinject.src.dir=extensions/assistedinject/src