PHOENIX-1251 Salted queries with range scan become full table scans

Conflicts:
	phoenix-core/src/it/java/org/apache/phoenix/end2end/SkipScanAfterManualSplitIT.java
	phoenix-core/src/main/java/org/apache/phoenix/iterate/ParallelIterators.java
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/phoenix