PHOENIX-1390 Stats not updated on client after major compaction

Conflicts:
	phoenix-core/src/it/java/org/apache/phoenix/end2end/StatsCollectorIT.java

Conflicts:
	phoenix-core/src/it/java/org/apache/phoenix/end2end/BaseQueryIT.java
	phoenix-core/src/it/java/org/apache/phoenix/end2end/ReverseScanIT.java
	phoenix-core/src/it/java/org/apache/phoenix/end2end/StatsCollectorIT.java
	phoenix-core/src/main/java/org/apache/phoenix/coprocessor/MetaDataEndpointImpl.java
	phoenix-core/src/main/java/org/apache/phoenix/coprocessor/UngroupedAggregateRegionObserver.java
	phoenix-core/src/main/java/org/apache/phoenix/query/QueryServicesOptions.java
	phoenix-core/src/main/java/org/apache/phoenix/schema/PTableImpl.java
	phoenix-core/src/main/java/org/apache/phoenix/schema/stats/PTableStatsImpl.java
	phoenix-core/src/main/java/org/apache/phoenix/schema/stats/StatisticsCollector.java
	phoenix-core/src/main/java/org/apache/phoenix/schema/stats/StatisticsUtil.java
PHOENIX-1391 Remove obsolete hint

Conflicts:
	phoenix-core/src/main/java/org/apache/phoenix/execute/BaseQueryPlan.java
Update QueryPlanTest to remove reverse test