[issue7716] IPv6 detection, don't assume existence of /usr/xpg4/bin/grep

[Brian Curtin]

Changes by Brian Curtin <curtin at acm.org>:


----------
components: +Build
keywords: +needs review
priority:  -> normal
type:  -> behavior
versions:  -Python 2.5

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue7716>
_______________________________________