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/arrstr.h

@@ -176,7 +176,7 @@ public:
   wxString& Item(size_t nIndex) const
     {
         wxASSERT_MSG( nIndex < m_nCount,
-                      _T("wxArrayString: index out of bounds") );
+                      wxT("wxArrayString: index out of bounds") );
 
         return m_pItems[nIndex];
     }
@@ -187,7 +187,7 @@ public:
   wxString& Last() const
   {
       wxASSERT_MSG( !IsEmpty(),
-                    _T("wxArrayString: index out of bounds") );
+                    wxT("wxArrayString: index out of bounds") );
       return Item(GetCount() - 1);
   }