There is annoying overloading between Window::Notify and
SfxListener::Notify, and the Window one has apparently fewer
implementations, so rename that and remove lots of disambiguating
"using Notify" in multiply inheriting classes.

Change-Id: I8b597fd9e70cf2e7103b9dfa7cc666e79e7aff49
(cherry picked from commit 6bb20609)
(cherry picked from commit 03bfafb3)