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

src/gtk/glcanvas.cpp

@@ -205,7 +205,7 @@ bool wxGLCanvas::Create(wxWindow *parent,
                         const int *attribList,
                         const wxPalette& WXUNUSED_UNLESS_DEBUG(palette))
 {
-    wxASSERT_MSG( !palette.IsOk(), _T("palettes not supported") );
+    wxASSERT_MSG( !palette.IsOk(), wxT("palettes not supported") );
 
     m_exposed = false;
     m_noExpose = true;