Increase visibility of ReadOnlyGraph and EventGraph classes for more custom needs.
EventGraph: Expose removed element properties as a map as a part of the removal events.

This is required in order to read the removed element data after it has been removed when event is triggered.
EventGraph: Expose removed element properties as a map as a part of the removal events.

This is required in order to read the removed element data after it has been removed when event is triggered.
An example test, exposing #378
Fixes #378 by using the GraphDatabaseApI interface and trying to log exceptions in that behaviour
Reworked log messages to make them cleaner
There was a test in Neo4jGraphTest that didn't correctly shutdown the graph.
To find the right one, I added a kind of fail early in deleteDirectory, ensuring this method fail when directory can't be deleted. This way, each Neo4j test that do not properly close the graph will show up immediatly.
commented out the thrown exception as it make the whole OrientDB fail.
Removed unused import.
Code cleanup in eventgraph.

More comments.  Change stub event listener to use AtomicLong instead of int.
Remove extra semi-colons.
Added test for ensuring map values were sent to the remove vertex event
Merge remote-tracking branch 'asaf/events'

Conflicts:
	blueprints-core/src/main/java/com/tinkerpop/blueprints/util/wrappers/event/EventGraph.java
	blueprints-core/src/main/java/com/tinkerpop/blueprints/util/wrappers/event/listener/EdgeRemovedEvent.java
	blueprints-core/src/main/java/com/tinkerpop/blueprints/util/wrappers/event/listener/StubGraphChangedListener.java
	blueprints-core/src/main/java/com/tinkerpop/blueprints/util/wrappers/event/listener/VertexRemovedEvent.java
Better thread safety on stub for event listener.
Test for properties removed from an edge.
Update changelog.
Some comments around BaseTest for Blueprints test suite.
Merge branch 'issue380'
put the ERROR messages in Neo4jGraph in the standard format used throughout TinkerPop.
Increase visibility of EventIndex class so it can be wrapped directly.