cleaning up rget_read_response_t
removed a bunch of anachronistic query_language namespace bullshit
took some more stuff out of the result_t variant
more variant work
bugfix
minor cleanup in rdb_r_unshard_visitor_t
line length cleanup
fixed string `serialized_size` problem
break placement
fixed compile errors
more small edits
Merge branch 'next' into mlucy_streaming