1. test for thr_setconcurrency() added to configure

2. wxListCtrl headers always black
3. some warnings in dcpsg.cpp corrected
4. returning FALSE from OnPrintPage() should abort printing now


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4838 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/listctrl.cpp

@@ -853,7 +853,9 @@ void wxListHeaderWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
 
     dc.SetBackgroundMode(wxTRANSPARENT);
     dc.SetTextForeground( *wxBLACK );
-    if (m_foregroundColour.Ok()) dc.SetTextForeground( m_foregroundColour );
+
+    // do *not* use the listctrl colour for headers - one day we will have a
+    // function to set it separately
 
     x = 1;
     y = 1;