o.c.sds; o.c.dal2:
- guarantee delivery of connection & value change event when registring
listener
- fix abstract behavior
- fix bargraph alarm behavior (transparency)
Merge remote-tracking branch 'origin/rel15x' into rel15x

Conflicts:
	applications/plugins/org.csstudio.sds/src/org/csstudio/sds/eventhandling/AbstractBehavior.java