During the 1.3->2.0 migragrion; ab its #defined VERSION own string was replaced

During the 1.3->2.0 migragrion; ab its #defined VERSION own string was replaced
by that of the base server distribution it sits in. Propably by accident.

This is propably not a good idea - as ideally one would like to be able to compare
ab runs as much as possible - even across releases of apache 2.0 - assuming ab or
the dependent APR has not changed (note to self: we do not track APR in our version
structure). This commit decouples the version strings for now. Though the actual
value may be nicely confusing.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@94792 13f79535-47bb-0310-9956-ffa450edef68