Conform to py3k dict.{keys, items, values} with some advice from 2b3

M    idlelib/configHandler.py
M    idlelib/ColorDelegator.py
M    idlelib/Delegator.py
M    idlelib/ObjectBrowser.py
M    idlelib/PyShell.py
M    idlelib/Debugger.py
M    idlelib/configDialog.py
M    idlelib/StackViewer.py
M    idlelib/keybindingDialog.py
M    idlelib/tabpage.py
M    idlelib/EditorWindow.py
M    idlelib/WindowList.py
M    idlelib/RemoteDebugger.py
M    idlelib/dynOptionMenuWidget.py
diff --git a/Lib/idlelib/Debugger.py b/Lib/idlelib/Debugger.py
index 3c16b5a..cd31914 100644
--- a/Lib/idlelib/Debugger.py
+++ b/Lib/idlelib/Debugger.py
@@ -312,8 +312,7 @@
 
     def load_breakpoints(self):
         "Load PyShellEditorWindow breakpoints into subprocess debugger"
-        pyshell_edit_windows = self.pyshell.flist.inversedict.keys()
-        for editwin in pyshell_edit_windows:
+        for editwin in self.pyshell.flist.inversedict:
             filename = editwin.io.filename
             try:
                 for lineno in editwin.breakpoints: