Prevent on cleanup NPE when test skipped

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@1588622 13f79535-47bb-0310-9956-ffa450edef68
Increase timeout in test to give loaded systems a chance to complete properly

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@1588624 13f79535-47bb-0310-9956-ffa450edef68
Add Intellij IDEA control files to GitIgnore

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@1588625 13f79535-47bb-0310-9956-ffa450edef68