- we have a class BaseThread -- this is a base class -- we can inherit from it when
creating a new thread
- others treads are correctly stopped (when signal comes) -- pthread_join
- we have a special thread only for signals
git-svn-id: svn://ttmath.org/publicrep/winix/trunk@685 e52654a7-88a9-db11-a3e9-0013d4bc506e