Globally replace _T() with wxT().

Standardize on using a single macro across all wxWidgets sources and solve the name clash with Sun CC standard headers (see #10660).

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@61508 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/dcbuffer.h

@@ -112,7 +112,7 @@ private:
     // common part of Init()s
     void InitCommon(wxDC *dc, int style)
     {
-        wxASSERT_MSG( !m_dc, _T("wxBufferedDC already initialised") );
+        wxASSERT_MSG( !m_dc, wxT("wxBufferedDC already initialised") );
 
         m_dc = dc;
         m_style = style;