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/vlbox.h

@@ -85,7 +85,7 @@ public:
     int GetSelection() const
     {
         wxASSERT_MSG( !HasMultipleSelection(),
-                        _T("GetSelection() can't be used with wxLB_MULTIPLE") );
+                        wxT("GetSelection() can't be used with wxLB_MULTIPLE") );
 
         return m_current;
     }