Eliminate relative imports and make them more py2exe friendly.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@26212 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

wxPython/wx/py/PyShell.py

@@ -18,9 +18,9 @@ class App(wx.App):
 
     def OnInit(self):
         import wx
+        from wx import py
         wx.InitAllImageHandlers()
-        from shell import ShellFrame
-        self.frame = ShellFrame()
+        self.frame = py.shell.ShellFrame()
         self.frame.SetSize((750, 525))
         self.frame.Show()
         self.SetTopWindow(self.frame)