HBASE-9733 Book should have individual Disqus comment per page (Misty Stanley-Jones)
Fix generation of multipage -- was being built into wrong place... specify different target dirs for one page and multipage
HBASE-10962 Decouple region opening (HM and HRS) from ZK (Mikhail Antonov)
HBASE-11302 ReplicationSourceManager#sources is not thread safe (Qianxi Zhang)