client state machine: function pointers instead of enum+switch

parse_err is a const pointer

drop unused target iri_test

generate compile_flags for clangd

[cgi] always set some variables

sync CGI section with actual implementation

mention v1.5

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.

bring the CGI implementation in par with GLV-1.12556

require absolute paths in config file

ensure absolute paths in config-less mode

use absolute paths in the regression suite

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.

ensure iri.host isn't NULL

sync