The APACI libexecdir was not extended with an "apache/" subdir if the

installation prefix doesn't already contain "apache". Although it is useful
because the DSO files are totally Apache-specific. Now libexecdir is treated
the same way sysconfdir, datadir, localstatedir and includedir are already
treated.

Submitted by: Charles Levert <charles@comm.polymtl.ca>
Reviewed by: Ralf S. Engelschall
PR: 2551


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@81656 13f79535-47bb-0310-9956-ffa450edef68