[FELIX-4188] If a bundle is stopped while the SCR extender is being stopped, the callback for the STOPPING event returns before full deactivation

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1509690 13f79535-47bb-0310-9956-ffa450edef68
[FELIX-4189] DS should not hold any lock while calling bundleContext#getService and #ungetService

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1509691 13f79535-47bb-0310-9956-ffa450edef68