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/sound.h

@@ -40,7 +40,7 @@ public:
     {
         wxASSERT_MSG( (flags & wxSOUND_LOOP) == 0 ||
                       (flags & wxSOUND_ASYNC) != 0,
-                     _T("sound can only be looped asynchronously") );
+                     wxT("sound can only be looped asynchronously") );
         return DoPlay(flags);
     }