httpd.exp and lots of other export files are generated based on the

AP[RU]_DECLARE macros. This commit gets mod_cgid working again as a DSO on
AIX.
However, this brings up the need to look for any functions that are
available as part of the API, and AP[RU]_DECLAREing them, so things don't
blow up in DSOs.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@89790 13f79535-47bb-0310-9956-ffa450edef68