• wrapped wxListCtrl::SetItemPtrData.
  
• updated to use sv_magicext / mg_findext so
  external modules do not stomp on our magic.
  
• updated wxListView so that LC_VIRTUAL style works.
  
• set wxListCtrl full constructor to create evthandler.
  
• updated Wx::Ribbon controls for 2.9.4 interface +
  tool/button 'Add' and 'Insert' methods now return objects
  as described in the docs instead of int id's.
  
• added SetClientData to PGProperty and PropertyGridInterface
  
• Wx::ToolBar->SetClientData now deletes any prior set Wx::Object
  
• wxDataViewListCtrl and wxDataViewListStore - fix ClientData for >= 2.9.4
  
• /usr/local/lib needs removing from LD:DL:FLAGS on all *nix types
  
• nostdinc now removed from any flags on MacOSX
  
• Fixed handling of asserts and debug level > 0 on wxWidgets >= 2.9.3
  
• Added wxApp::OnAssertFailure