Whenever a new class is self-registered from a plug-in
additional INFO message is displayed with class name
and listener / exported interface.
Additionally when a Listener fails to get created
from injection into a DynamicSet, an error is logged
allowing the plug-in developer to understand what
was the problem.
Without this patch, you may see your plus-in loading
correctly but then the listeners being discarded
silently and you would spend a lot of time figuring
out where the problem was.
Change-Id: Ief3d3c5a3012136f73296a3afa5c85c22fc38bb7
c0732b1301