HBASE-9658: Addendum to HBASE-9534 to fix 0.96

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.96@1526334 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8870 Store.needsCompaction() should include minFilesToCompact (Liang Xie)

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.96@1526343 13f79535-47bb-0310-9956-ffa450edef68