Add define for ap_spawnvp. Dean removed obsolete symbols NO_OTHER_CHILD

and NO_RELIABLE_PIPED_LOGS.

Submitted by:	Ryan Bloom, Manoj Kasichainula


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@83799 13f79535-47bb-0310-9956-ffa450edef68