Experimental Titan on TinkerPop 2.5.0-SNAPSHOT
New exclusions for changes in snapshot dependencies
Bumped to TinkerPop 2.5.0
Added support for meta data on entries so that information like timestamp, TTL and visibility can be passed to the storage backend.
Added MetaData to IndexEntry as well
Merge branch 'titan05' of https://github.com/thinkaurelius/titan into titan05
Merge branch 'titan05' of https://github.com/thinkaurelius/titan into titan05
Implemented getting timestamps and ttl from Cassandra and added test case to verify its working using ImplicitKeys.
How to get the TTL from Cassandra embedded?
add TTL support for embedded Cassandra
Fixed TTL meta data to return 0 instead of null and convert to long.
cast ttl to primitive long for more efficient boxing
throw Unsupported exception instead of returning null in meta data getter for unsupported meta data.
Merge branch 'embedded-ttl' of https://github.com/thinkaurelius/titan into embedded-ttl

Conflicts:
	titan-cassandra/src/main/java/com/thinkaurelius/titan/diskstorage/cassandra/astyanax/AstyanaxKeyColumnValueStore.java
	titan-cassandra/src/main/java/com/thinkaurelius/titan/diskstorage/cassandra/thrift/CassandraThriftKeyColumnValueStore.java
Added containsKey(store,key,txh) method and tested in one instance
Prepare HBase for timestamps
Moving containsKey() from KCVS to KCVSUtil
Merge branch 'titan05' of https://github.com/thinkaurelius/titan into titan05
Added omitted vertex id to trigger log and adjusted test case
Brought up to date with titan05