Fallback from sysconf-based to plain HZ-based `ticks per second'

calculation in mod_status for all systems which don't have POSIX
sysconf() (like UTS 2.1) and not only for the NEXT platform.

Submitted by: Dave Dykstra <dwd@bell-labs.com>
Reviewed by: Ralf S. Engelschall
PR: 3055


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@82210 13f79535-47bb-0310-9956-ffa450edef68