PIVOT-1032:  Change all "default public" in all the listener interfaces
to just "default".  This reduces our "check style" error count by around
1000, because there were two errors per occurrence:
[ModifierOrder] because the order should be "public default", and
[RedundantModifier] because "public" is unnecessary in an interface.


git-svn-id: https://svn.apache.org/repos/asf/pivot/trunk@1830383 13f79535-47bb-0310-9956-ffa450edef68