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

tests/strings/unicode.cpp

@@ -333,7 +333,7 @@ void UnicodeTestCase::ConversionUTF8()
         StringConversionData("\xc2", NULL),
     };
 
-    wxCSConv conv(_T("utf-8"));
+    wxCSConv conv(wxT("utf-8"));
     for ( size_t n = 0; n < WXSIZEOF(utf8data); n++ )
     {
         const StringConversionData& d = utf8data[n];