SLING-2989 - [Tooling] integrate with vlt once available

Create a vlt-wrapper bundle which wraps and re-export the
org.apache.jackrabbit.vault.* packages, and also javax.jcr.

git-svn-id: https://svn.apache.org/repos/asf/sling/branches/tooling-ide-vlt@1514761 13f79535-47bb-0310-9956-ffa450edef68
SLING-2989 - [Tooling] integrate with vlt once available

Added a impl-vlt which contains a simple read-only implementation of the
Repository. I've verified that this runs against a stock sling launchpad
instance and made sure that it has priority over the resource impl by
giving it a higher service.ranking.

git-svn-id: https://svn.apache.org/repos/asf/sling/branches/tooling-ide-vlt@1514762 13f79535-47bb-0310-9956-ffa450edef68