Added "metal" theme.

Added bool param to wxUniv indicating if the controls
   takes its background from the parent (such as
   static texts, radio buttons etc).


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15086 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/univ/checkbox.cpp

@@ -70,6 +70,8 @@ bool wxCheckBox::Create(wxWindow *parent,
     if ( !wxControl::Create(parent, id, pos, size, style, wxDefaultValidator, name) )
         return FALSE;
 
+    m_hasDialogBackground = TRUE;
+
     SetLabel(label);
     SetBestSize(size);