Solaris 2.4 needs spencer regex.

PR:             1321
Submitted by:   John Line <jml4@cam.ac.uk>
Reviewed by:    Lars Eilebrecht, Marc Slemko, Dean Gaudet


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@79466 13f79535-47bb-0310-9956-ffa450edef68