mod_rewrite created RewriteLock files under the uid of the parent process,

thus the child processes had no write access to the files.  Now a chown() is
done to the uid of the childs if applicable.

Submitted by: Lars Eilebrecht
Reviewed and fixed by: Ralf S. Engelschall
PR: 2341

PS: Lars, I've changed s->server_uid to ap_user_id because s->server_uid
    can be different inside virtual hosts for the suEXEC mechanism. But
    we need the uid of the process, so ap_user_id is correct IMHO.
    And I've searched for the PR in the bugdb for you and noted it above.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@81705 13f79535-47bb-0310-9956-ffa450edef68