add test module;
use updfor sobj procs;
Seq#fork takes ThreadGroup as param, returns self instead;
add comment;
Mcr::SvList#add() sets current sid(@sid);
Seq@exe_proc is changed to cfg[:submcr_proc] for forking submacro;
Mcr::SvList#add() takes Entity and generates Seq;
Mcr::SvList#clean() includes upd;
Mcr::SvList/ takes multiple cmd/par on test module;