[PATCH 1/2] Fix typo in _REGEX_VERSION name

[Roland McGrath]

_REGEX_VERSION is never defined and in fact it was removed from the
standard.  For backward compatibility we must support _SC_REGEX_VERSION and
return -1 without setting errno, but I don't think we should treat this
like the real cases any more.  That is, just unconditionally return -1
and a comment about it having been removed in 1003.1-2004.


Thanks,
Roland