Modify start level handling to always process transiently started bundles
synchronously and to not retry starting bundles that were unsuccessfully
started in previous start level changes. (FELIX-3411, FELIX-3713)


git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1441627 13f79535-47bb-0310-9956-ffa450edef68