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/glcanvas_osx.cpp

@@ -150,7 +150,7 @@ bool wxGLCanvasBase::IsDisplaySupported(const int *attribList)
 bool wxGLCanvas::SwapBuffers()
 {
     WXGLContext context = WXGLGetCurrentContext();
-    wxCHECK_MSG(context, false, _T("should have current context"));
+    wxCHECK_MSG(context, false, wxT("should have current context"));
 
     WXGLSwapBuffers(context);
     return true;