Add CVS Revision number to ab.c to allow for detecting changes

which were not marked by a version number update. Additionally,
display base repository name (apache-1.3)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@84055 13f79535-47bb-0310-9956-ffa450edef68