FELIX-599 Mutliple changes to service registration locking:
- only log once (at info level) when waiting for the lock release
- wait at most 10 * 1 seconds
- unlock only allowed for the lock owner
- prevent calling the unlock method if lock acquisition failed

Files:
modified: /felix/trunk/scr/src/main/java/org/apache/felix/scr/impl/AbstractComponentManager.java (try)