FELIX-950 Replace bound service for non-multiple references if a new
service is registered with a higher service.ranking. Also always ensure
binding to the highest ranking service of non-multiple references.
Finally cleaned up ServiceReference and Service acquisition methods.

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@745981 13f79535-47bb-0310-9956-ffa450edef68
2 files changed