Ignore new "build" and "out" directories

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1888140 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/.gitignore b/.gitignore
index 6a47526..97b2d36 100644
--- a/.gitignore
+++ b/.gitignore
@@ -33,6 +33,7 @@
 
 # IntelliJ
 /out/
+/*/out/
 .idea
 *.iml
 *.iws
@@ -43,6 +44,7 @@
 
 # Ant
 .ant-targets-build.xml
-build
+/build/
+/*/build/
 dist
 lib/