MODE-1921 Extended the ModeShape Event API, with a PropertyEvent interface which allows additional information to be retrieved from property events. To get this information however, clients will need to cast the events to the new interface.
MODE-1921 Updated JcrPropertyEvent, as per review
MODE-1941 - Added an integration test which verifies  authentication & authorization via the default EAP security configuration.
MODE-1940 - Fixed indexing when a rename operation occurs.
MODE-1947 Corrected potential null pointer exception in Excel sequencer

Handle undefined cells in Excel documents
MODE-1944 Migrated ModeShape EAP kit to EAP 6.1.0.GA. This presented a number of challenges:
- RestEASY 2.3.6 excludes explicity a dependency required by resteasy-multipart-provider/apache.james. For this to work, it had to be re-added with the scope "runtime"
- Deploying exploded webapps does not work anymore (for whatever reason...). This means that our EAP kit had to be changed to provide packaged .war files for the web application. This brought forth several issues around the subsystem and the content of the wars which was fixed.
Changed EAP install script to executable
MODE-1942 Removed support for storing indexes in ISPN.
MODE-1945 Fixed the code which validated mandatory children of a node type, before saving a session.
MODE-1943 Implemented peer-to-peer indexing, based on processing of remote internal events. This mechanism will be triggered whenever a repository is clustered and indexing is not configured in clustered mode.
MODE-1913 Removed the CMIS webapp from the EAP xml configuration file. The web application will still be packaged & distributed, but will not start together with the subsystem.
MODE-1949 Fixed property & child node validation when removing mixins.
Corrected compiler warnings and JavaDoc errors.
Merge branch 'MODE-1949' of git://github.com/hchiorean/modeshape into hchiorean-MODE-1949
MODE-1901 Added support for obtaining the query plan without executing the query

There is a new 'explain' method in the ModeShape public query API that returns the internal
query plan for a given statement and language. This same functionality
is also exposed in the JDBC driver (as a custom method) and the RESTful
API (v2).
MODE-1950 - Updated the REST service so that mixins are removed only after properties & children have been processed. Also, implemented a type conversion mechanism so that JSON primitive types are correctly converted to JCR Values, as opposed to always being strings.
MODE-1948 Fix resource adapter shutdown procedure.

The resource adapter used to make 2 instance and close one which wasn't used
anyway. The code has only one engine now, and it is shut down when the resource
adapter's stop() method is called.

Make sure to wait until the shutdown is complete. Since the RA's stop() method
can be called from a shutdown hook, new background threads will be forcibly
halted before their work completes. When the shutdown takes more than 30 seconds,
log the time out exception.

This commit also adds some extra debug logging to know when the shutdown method
gets called.
MODE-1948 Changed logging to be more consistent with ModeShape patterns
MODE-1948 Fix / clean up I18n.

Make error I18n texts better fit the code they're supposed to log about,
clean up unused messages copied from elsewhere.

Add dependency on common tests classes to get I18n sanity test working.
MODE-1948 Initialize engine when requested by connection classes.