to AppleRemoteController

having a MainController class in the global namespace of an application with
gazillions of MVC patterns is not a good idea. Renaming it to better match
its scope (i.e. the Apple Remote) cleans this up.

(cherry picked from commit 8ef38360)

Conflicts:
	apple_remote/source/RemoteMainController.m
	include/apple_remote/RemoteMainController.h
	vcl/inc/osx/saldata.hxx
	vcl/osx/saldata.cxx
	vcl/osx/salinst.cxx
	vcl/osx/vclnsapp.mm

Change-Id: I1f252ac51ef65966a48ee03b2cd3519f98d57383