Fix broken AIX shared module build. The httpd.exp file was not up to date.

Also install the httpd.exp file on a 'make install' to allow apxs builds
against it on AIX.  apxs is still completely broken on AIX.  It
generates bogus -bI and -bE stuff.  Working on fix for that.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@83333 13f79535-47bb-0310-9956-ffa450edef68