Applied patch [ 1039456 ] [wxOS2]Popup menu problems

Applied patch [ 1039456 ] [wxOS2]Popup menu problems
By Dave Parsons
Fixes problems including:

titles do not display,
title id is already allocated to the menu separator,
menus show in totally the wrong position,
possible to call DoPopupMenu with out of range parameters,
showing a menu enters an infinite loop with 100% cpu usage,
ProcessEvent is called destroying the return value from
HandleMouseEvent.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@29710 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775