Commit Briefs
refactor executor_main
now it's symmetrical to listener_main().
don't add the query to argv
FRC3875 says that if the query does not contain any unecnoded "=" characters, we SHOULD treat the query string as a "search-string", split in on "+" and add every word to the CGI argv. In launch_cgi it's too late because iri->query is the *decoded* query! I have in mind some refactoring around how we decode things, so this is postponed.
fix computed offset
Oh my, this is such a stupid mistake. It went undiscovered only because I always used CGI scripts on the first vhost (and hence the offset would be 0) and never on the others.
sync the CGI environment with the manpage
while there also add SERVER_PROTOCOL