bug#1039: 23.0.60; emacs forgets EOL convention after revert-buffer

[martin rudalics]

> I don't understand the need for the revert-buffer-file-coding-system
> variable.  Why doesn't last-coding-system-used work here?

I suppose it's because of the intelligent point preserving behavior of
`revert-buffer'.  When buffer and file don't differ (modulo decoding)
nothing gets inserted.  OTOH Handa kills `buffer-file-coding-system' in
`revert-buffer' since 2002 so the old value is lost and Emacs goes for
the default value instead.  I don't understand though why the problem
became virulent only lately.

In any case it would be helpful if the OP tested whether my patch works
for him ;-)

martin