APR-ize repos.c and lock.c. trim back repos.h. Original patch by Joe Orton

    with some additional APR-izing from Greg (lock.c and ap_rename_file).

Submitted by: Joe Orton


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@85779 13f79535-47bb-0310-9956-ffa450edef68