ACCUMULO-2160 back-port real bugs found by findbugs
Merge branch '1.4.5-SNAPSHOT' into 1.5.1-SNAPSHOT
Merge branch '1.5.1-SNAPSHOT' of https://git-wip-us.apache.org/repos/asf/accumulo into 1.5.1-SNAPSHOT
ACCUMULO-2172 wait for minor compaction flags to be flushed to the WAL
Merge branch '1.5.1-SNAPSHOT' into 1.6.0-SNAPSHOT

Conflicts:
	server/tserver/src/main/java/org/apache/accumulo/tserver/log/DfsLogger.java