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

samples/printing/printing.h

@@ -84,7 +84,7 @@ private:
 class MyPrintout: public wxPrintout
 {
 public:
-    MyPrintout(MyFrame* frame, const wxString &title = _T("My printout"))
+    MyPrintout(MyFrame* frame, const wxString &title = wxT("My printout"))
         : wxPrintout(title) { m_frame=frame; }
 
     bool OnPrintPage(int page);