Change the storage allocation mechanism for ap_proc_t structures

passed to ap_note_subprocess() by mod_rewrite and mod_include.  The
storage needs to last as long as the pool passed to
ap_note_subprocess(), so autodata won't work.

The mod_rewrite change wasn't tested.  A normal build with mod_rewrite
on Linux currently results in the link failing due to unresolved
references to dbm_*.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@85928 13f79535-47bb-0310-9956-ffa450edef68