several rmail-related functions do not interact well with full header

[Boris Aronov]

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In GNU Emacs 21.1.2 (sparc-sun-solaris2.7, Motif Version 2.1.0)
 of 2001-11-01 on giraffe
configured using `configure  -with-gif -with-x-toolkit=motif'


When one does "t" in RMAIL to toggle full display of headers, several
RMAIL functions break.  They assume that full display is NOT on.  They
should be wrapped in code that saves the state of the toggle, then
sets it to whatever they expect and then resets it, if necessary.

Examples:  go to any rmail file, type "t" and invoke
rmail-redecode-body.  Or load "uce.el" and invoke uce-reply-...
same effect.

I hope this helps.

--Boris