HBASE-12528 Document the newly introduced params for providing principal and keytabs. <Srikanth Srungarapu>
HBASE-12738 Chunk Ref Guide into file-per-chapter
HBASE-12741 AccessController contains a javadoc issue (Jurriaan Mous)
HBASE-12737 Fixed typos hbase shell prompt in documents (Tatsuo Kawasaki)
HBASE-12734 TestPerColumnFamilyFlush.testCompareStoreFileCount is flakey (zhangduo)
HBASE-12738 Addendum to fix up hbase-default.xml mistake