Initial subsystem support for the OSGi installer

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1616266 13f79535-47bb-0310-9956-ffa450edef68
Initial subsystem support for the OSGi installer

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1616268 13f79535-47bb-0310-9956-ffa450edef68
Update svn ignore

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1616274 13f79535-47bb-0310-9956-ffa450edef68