HBASE-9963 Remove the ReentrantReadWriteLock in the MemStore (Nicolas Liochon)

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1542104 13f79535-47bb-0310-9956-ffa450edef68
HBASE-9799 Change Hadoop 1.2 dependency to 1.2.1

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1542117 13f79535-47bb-0310-9956-ffa450edef68