svn merge -c 1213630 from trunk for adding .classpath, .externalToolBuilders, .launches, .project and .settings to svn:ignore of hadoop-mapreduce-project/hadoop-mapreduce-examples.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1213632 13f79535-47bb-0310-9956-ffa450edef68