[maven-release-plugin] prepare release 1.5.2
ACCUMULO-3048 Bump to 1.5.3-SNAPSHOT
ACCUMULO-3150 Set 0 for monitor log4j port config value

The rest of the code is already in place to support
a randomly chosen port for the log4j forwarding to
the monitor. We just need to configure MAC to do this.

Added a test to ensure that ports we want to have
a value of '0' are in fact configured as such.
ACCUMULO-3153 ACCUMULO-3152
ACCUMULO-3152 fix typo
Merge branch '1.6.1-SNAPSHOT'
ACCUMULO-3152 fix typo
ACCUMULO-3153 ACCUMULO-3152
Merge branch '1.5.3-SNAPSHOT' into 1.6.1-SNAPSHOT

Conflicts:
	assemble/pom.xml
	core/pom.xml
	examples/pom.xml
	examples/simple/pom.xml
	fate/pom.xml
	minicluster/pom.xml
	minicluster/src/main/java/org/apache/accumulo/minicluster/MiniAccumuloCluster.java
	minicluster/src/test/java/org/apache/accumulo/minicluster/MiniAccumuloClusterTest.java
	pom.xml
	proxy/pom.xml
	server/tserver/pom.xml
	start/pom.xml
	test/pom.xml
	trace/pom.xml
ACCUMULO-3048 Fix SCM tag value
Merge remote-tracking branch 'origin/1.5.3-SNAPSHOT' into 1.6.1-SNAPSHOT
Merge remote-tracking branch 'origin/1.6.1-SNAPSHOT' into 1.6.1-SNAPSHOT
Merge branch '1.6.1-SNAPSHOT'

Conflicts:
	minicluster/src/main/java/org/apache/accumulo/minicluster/impl/MiniAccumuloConfigImpl.java
Merge remote-tracking branch 'origin/1.5.3-SNAPSHOT' into 1.5.3-SNAPSHOT
Merge branch '1.5.3-SNAPSHOT' into 1.6.1-SNAPSHOT
Merge branch '1.6.1-SNAPSHOT'
ACCUMULO-3148 Change the verification of HalfDeadTServerIT

The test can fail in situations where we expect it to pass
(tserver dies and had lost its ZK session, but "Session expired"
doesn't make it into the stdout). Try to make the verification
a bit more reliable.
ACCUMULO-3140 made user initiated majC wait for current minC to finish
Merge branch '1.5.3-SNAPSHOT' into 1.6.1-SNAPSHOT

Conflicts:
	server/tserver/src/main/java/org/apache/accumulo/tserver/Tablet.java
Merge branch '1.6.1-SNAPSHOT'