Allow to specify the title used by wxPreferencesEditor window.

Customize the title is useful for "Settings"-style windows which are used for
editing the properties of the given object, that should be identified in the
window title, as opposed to the global program preferences.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74006 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/preferences.h

@@ -88,7 +88,7 @@ class WXDLLIMPEXP_CORE wxPreferencesEditor
 {
 public:
     // Ctor creates an empty editor, use AddPage() to add controls to it.
-    wxPreferencesEditor();
+    wxPreferencesEditor(const wxString& title = wxString());
     ~wxPreferencesEditor();
 
     // Add a new page to the editor. The editor takes ownership of the page