Improved lingering_close by adding a special timeout, removing the

spurious log messages, removing the nonblocking settings (they
are not needed with the better timeout), and adding commentary
about the NO_LINGCLOSE and USE_SO_LINGER issues.  NO_LINGCLOSE is
now the default for SunOS4, Unixware, NeXT, and Irix.

Send error messages about setsockopt failures to the server error
log instead of stderr.

Reviewed by: Jim Jagielski, Chuck Murcko, Randy Terbush


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@77804 13f79535-47bb-0310-9956-ffa450edef68