Adding JVMStabilityInspector, findSwallowedExceptions.py, changes to build.xml to run swallow checks
put swallow-check back into build, remove timing from JVMStabilityInspector
move import in CompactionManager
adding external call to remove shutdown hook in Storageservice
removing FileNotFoundException from JVMStabilityInspector
adding license to findSwallowedExceptions.py
Fix PRSI handling of CQL3 row markers for row cleanup

patch by Berenguer Blasi; reviewed by Aleksey Yeschenko for
CASSANDRA-7787
Merge branch 'cassandra-2.0' into cassandra-2.1.0

Conflicts:
	CHANGES.txt
	src/java/org/apache/cassandra/db/index/SecondaryIndexManager.java
Merge branch 'cassandra-2.1.0' into cassandra-2.1
Throw IRE for relations on entire collections

Patch by Tyler Hobbs; review by Sylvain Lebresne for CASSANDRA-7506
Merge branch 'cassandra-2.0' into cassandra-2.1.0
Merge branch 'cassandra-2.0' into cassandra-2.1

Conflicts:
	CHANGES.txt
Merge branch 'cassandra-2.1.0' into cassandra-2.1
Merge branch 'cassandra-2.1' of https://github.com/apache/cassandra into 7507