made prepare_context public (same as in case of rubinius);
added method for variables initialization (we need to reset them in case of attaching);
changed the way we determine that debug started (now it is started == 1 instead of catchpoints != Qnil;
made prepare_context public (same as in case of rubinius); added method for variables initialization (we need to reset them in case of attaching); changed the way we determine that debug started (now it is
started == 1
instead ofcatchpoints != Qnil
;