vcl: moved paint functions from window.cxx to paint.cxx

Change-Id: Ie039c971d9d015e20d814fdda67bd489e6aa7501
vcl: change to true and false in Window::IsTopWindow()

Change-Id: Id8ef10950ea5034cf5a7e497843fe996a2c322f2
vcl: change to true and false in Window::ImplGetWinData()

Change-Id: I7e4c664bf867b43f121b6c37bfe8e470cab2cfd3
vcl: change to true and false in Window::ImplTestMousePointerSet()

Change-Id: I5184b9bf7d080f65a702a88214906264b9d88e2f
vcl: change to true and false in Window::Show()

Change-Id: I299dcb649d40514c16e41b138def0ad67894cd6d
vcl: change to true and false in Window::SetCallHandlersOnInputDisabled()

Change-Id: Id6af99e1dfbf6bce68794027700eb500b7f3a8dc
vcl: change to true and false in Window::ImplGetCanvas()

Change-Id: I0cf18a87f85c62d3f8b92af8f1ccda3d2b2f93f1
vcl: change to sal_True and sal_False in comments in window.cxx

Change-Id: Ie42eb45e05a928a59b51e0546e212dc938967eb4