[RFC] Deprecate GCC2?

Hi all,
  Amos asked me to look into compiler-detection issues in autoconf
(e.g. http://bugs.squid-cache.org/show_bug.cgi?id=3674)

I'm working to improve compiler detection macros (see the bug for a
status update on that), but at the same time I'm wondering whether
it's a good idea to also deprecate older compilers such as gcc 2.X and
refuse to build (or at least require an explicit flag be passed from
the user) if we detect such an ancient compiler (I'd say any gcc 2
version).

Comments?

--
    /kinkie