Fixing autoconf, et all for BSDs

[Garrett C. <yan...@gm...>]

Hi,
    As part of the a work project, I've tasked myself to upgrade
net-snmp from an older version to a newer version. One of the things
that has occurred recently on FreeBSD is the netinet, et all headers
have been shuffled, which has uncovered a fair amount of breakage with
the autoconf tests on FreeBSD. Trying to fix that I've looked at
fixing support on some of the other BSDs (Net, Open), and I noticed
with the latest release of Open (at least) with the default settings
when building from svn (I didn't realize everything had been shuffled
over to git at the time) that the build was broken with some missing
symbols/bad #defines.
    I'm going through and fixing things as I can internally, creating
patch 'sightings' as needed on sf.net (I was silly and filed some
patches under bug reports before I realized there were separate queues
for bugs and patches), but if the developers have any guidance for
what needs to be done to clean things up, that would be more than
welcome. The OS-dependent code is messy and my personal feeling is
that it should be properly refactored to avoid , and antiquated OS
support should be removed (FreeBSD 5.x has been dead for some time for
instance, and FreeBSD 6.x is no longer supported, etc), but these are
just some other thoughts I had w.r.t. net-snmp and OS support.
Thanks!
-Garrett