Some new features updates.

Still lots missing from here, I'm sure.  If you've added a new feature
since 1.3, please check to see if it is here.  (And the same thing
for the "upgrading" doc.)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@92669 13f79535-47bb-0310-9956-ffa450edef68