Add a CoreDumpDirectory directive to allow users to specify where Apache

should try to core dump.

Reviewed by:	Brian Behlendorf, Dean Gaudet
Submitted by:
Obtained from:


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@78880 13f79535-47bb-0310-9956-ffa450edef68