* frames.texi (Frame Commands): C-z is now bound to suspend-frame.

* frames.texi (Frame Commands): C-z is now bound to suspend-frame.

* entering.texi (Exiting): C-z is now bound to suspend-frame.

* custom.texi (Init Examples): Replace Rumseld with Cheny (Bug#3519).
(Key Bindings): Reference Init Rebinding in introductory text.  Shift
some of the introduction to Keymaps node.
(Keymaps): Simplify.
(Local Keymaps): Simplify.  Move binding example to Init Rebinding.
(Minibuffer Maps): Remove mention of Mocklisp.
(Init Rebinding): Move mode-local rebinding example here from Local
Keymaps.
(Modifier Keys): Clarify.