HADOOP-8010. hadoop-config.sh errors when HADOOP_HOME_WARN_SUPPRESS is set to true and HADOOP_HOME is present. Contributed by Roman Shaposhnik.
git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1.0@1238997 13f79535-47bb-0310-9956-ffa450edef68