6978977: Productivity: use ant for java part of build

Reviewed-by: mduigou, herrick, ohair, ngthomas
diff --git a/.hgignore b/.hgignore
index 0092bd4..2d339f9 100644
--- a/.hgignore
+++ b/.hgignore
@@ -1,3 +1,4 @@
 ^build/
 ^dist/
 /nbproject/private/
+^webrev