FYI: there is some code duplication noticeable between slider and scrbar

Conflicts:
	vcl/source/control/longcurr.cxx
	vcl/source/control/lstbox.cxx
	vcl/source/control/menubtn.cxx
	vcl/source/control/morebtn.cxx
	vcl/source/control/prgsbar.cxx
	vcl/source/control/scrbar.cxx

Change-Id: I736cf155e252293ed571cd44a6a395b15c4bf576
Reviewed-on: https://gerrit.libreoffice.org/2966Reviewed-by: Thomas Arnhold <thomas@arnhold.org>
Tested-by: Thomas Arnhold <thomas@arnhold.org>