Rename locale.{c,h} to iperf_locale.{c,h} to avoid filename collision
with system header <locale.h>.

This apparently fixes problems on an ARM build, but this was generally
broken anyway.  It's slightly amazing this didn't cause problems before;
perhaps we never used <locale.h> before?

Addresses #203.
Regen.
Add some text to the README about info that's useful in bug reports.

A couple of other minor wording tweaks here and there.
Merge branch 'master' of github.com:kevinconstantine/iperf into kevinconstantine-master
Minor documentation updates for new --cport option.

For #207.
Merge branch 'kevinconstantine-master'