[Freeciv-Dev] configure fixlet

["Per I. Mathisen" <Per.Inge.Mathisen@xxxxxxxxxxx>]

This changes some warnings in configure that I find annoying. Configure
warnings show up when you do a simple grep for specific messages, or come
out of order when you use more, for example. That readline cannot be
installed isn't a big deal, so it does not need any warnings.

Genereally I think warnings should not be used.

Yours,
Per

"Economics is extremely useful as a form of employment for economists."
 -- John Kenneth Galbraith

noconfwarn.patch
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