mod_lua: Redesign the table construction/access mechanism, so we pass on a struct with the request_rec, the table pointer and the table name instead of just the table pointer. This allows us to use the request_rec for logging/editing purposes, as well as inform the user which exact table in the request_rec was modified.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1582858 13f79535-47bb-0310-9956-ffa450edef68