HBASE-11942 Fix TestHRegionBusyWait
HBASE-11936 IsolationLevel must be attribute of a Query not a Scan (Vladimir Rodionov)
HBASE-11845 HFile tool should implement Tool, disable blockcache by default

HFileTool now accepts configuration via -D arguments. The blockcache is
disabled by default.
HBASE-11845 addendum
HBASE-11847 HFile tool should be able to print block headers
HBASE-11966 Minor error in TestHRegion.testCheckAndMutate_WithCorrectValue() (Srikanth)
HBASE-11963 Synchronize peer cluster replication connection attempts (Maddineni Sukumar)
Remove PoolMap#remove(K,V) for Java 8
Remove XX:MaxPermSize from JVM arg lists
Local localhost test configuration
Path changes for MacOSX
Add options for JDWP debugging; resize default RS heap to 1g
liblagent path change for MacOSX