Raven UoW was not disposing of session if an error occurred, closes #755

Conflicts:
	src/impl/Persistence/RavenPersistence/NServiceBus.Persistence.Raven/RavenUnitofWork.cs
Merge branch '3.3.2'
Updated the Raven client to include the proposes fix for the locked files
issue -
https://github.com/ayende/ravendb/commit/9bc3fd31ed6623d5e43e5dafd0f7c4313b7e12c1
Related to #757
Updating to Raven 1.0 commit
https://github.com/ayende/ravendb/commit/09be895b501c039e246c4aee53005e54963fd3cc
in order to solve the startup issue with Raven 980. #757
Updating the Raven client to
https://github.com/ayende/ravendb/commit/6b65248abc4886af3d6bb6792e1cbbf90e401186
in order to resolve #757
Updating RavenDB to version 1.0.992
Merge branch '3.3.3'
Merge remote-tracking branch 'tracking/master'