Project 'ensure': ensure part is completed within 'super' in the overrided method;
  re-organize 'set()' methods which has ensure part;
Project 'ensure':
  re-organize exe(), convert() methods;
bugfix: Hashx#initialize should include super() to use upd();
rename Hashx#convert() -> upd_core() to avoid to mix up;
bugfix: local var error;
refactoring;
App::List/ Sqlog server isn't running unless $opt['e'];
Mcr::SvList/ remove override of set();