Bring mod_status for 2.0 back in line with mod_status for 1.3. This is

Bring mod_status for 2.0 back in line with mod_status for 1.3.  This is
basically a straight port of the 1.3 module to 2.0.  The MPMs need to be
modified a bit to work with mod_status, but prefork, mpmt_pthread, and
dexter have already been changed.  I will fix perchild tonight.  There
is a lot of common code that can be abstracted, and there seems to be a
small bug with regard to what mpmt_pthread and dexter report as current
connections.  ExtendedStatus does work again, although until the bug
mentioned above is fixed, it isn't as useful on mpmt_pthread and dexter.

Next week, I will look at allowing other modules to add data to the
STATUS page and possibly to the scoreboard itself.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@87949 13f79535-47bb-0310-9956-ffa450edef68