Ignore more Maven Eclipse project files

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1006351 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/.gitignore b/.gitignore
index 646e8c3..6d92b9b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,5 @@
 *.iws
 *.ipr
 velocity.log
+maven-eclipse.xml
+.externalToolBuilders