Show Compile Time Settings -- first committed version. A new switch "-V"

(in contrast to the existing switch "-v" with lower-case-v) shows (some
of) the relevant compiler defines which influence Apache's behavior at
run time. More diags may be added later, as may the optimization of
several strings into one.
Reviewed by:Dean Gaudet, Jim Jagielski, Ken Coar


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@79564 13f79535-47bb-0310-9956-ffa450edef68