UnixWare 7 has improved support for some stuff so that we no longer

need USE_FCNTL_SERIALIZED_ACCEPT, NO_LINGCLOSE, or NO_KILLPG.
Change already noted in CHANGES, but wasn't completed.

Submitted by:	Ron Record <rr@sco.com>
Reviewed by:	Roy Fielding


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@82471 13f79535-47bb-0310-9956-ffa450edef68