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/msw/private/button.h

@@ -38,7 +38,7 @@ namespace wxMSWButton
 // returns BS_MULTILINE if the label contains new lines or 0 otherwise
 inline int GetMultilineStyle(const wxString& label)
 {
-    return label.find(_T('\n')) == wxString::npos ? 0 : BS_MULTILINE;
+    return label.find(wxT('\n')) == wxString::npos ? 0 : BS_MULTILINE;
 }
 
 // update the style of the specified HWND to include or exclude BS_MULTILINE