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/osx/menuitem_osx.cpp

@@ -123,7 +123,7 @@ void wxMenuItem::Check(bool bDoCheck)
                 const wxMenuItemList& items = m_parentMenu->GetMenuItems();
                 int pos = items.IndexOf(this);
                 wxCHECK_RET( pos != wxNOT_FOUND,
-                             _T("menuitem not found in the menu items list?") );
+                             wxT("menuitem not found in the menu items list?") );
 
                 // get the radio group range
                 int start, end;