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/msw/mediactrl_am.cpp

@@ -1616,7 +1616,7 @@ bool wxAMMediaBackend::CreateControl(wxControl* ctrl, wxWindow* parent,
     // First get the AMGetErrorText procedure in debug
     // mode for more meaningful messages
 #if wxDEBUG_LEVEL
-    if ( m_dllQuartz.Load(_T("quartz.dll"), wxDL_VERBATIM) )
+    if ( m_dllQuartz.Load(wxT("quartz.dll"), wxDL_VERBATIM) )
     {
         m_lpAMGetErrorText = (LPAMGETERRORTEXT)
                                 m_dllQuartz.GetSymbolAorW(wxT("AMGetErrorText"));