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/recguard.h

@@ -35,7 +35,7 @@ public:
 
     ~wxRecursionGuard()
     {
-        wxASSERT_MSG( m_flag > 0, _T("unbalanced wxRecursionGuards!?") );
+        wxASSERT_MSG( m_flag > 0, wxT("unbalanced wxRecursionGuards!?") );
 
         m_flag--;
     }