rb_exit(). [ruby-dev:26347]
* eval.c (rb_thread_signal_exit): a new function to exit on main
thread.
* eval.c (rb_thread_switch): exit status should be retrieved from
ruby_errinfo.
* eval.c (rb_f_exit): ensure exit(0) should call
exit(EXIT_SUCCESS).
* missing/mkdir.c: remove. [ruby-core:05177]
* lib/delegate.rb (SimpleDelegator::__setobj__): need check for
recursive delegation. [ruby-core:04940]
* misc/ruby-mode.el (ruby-expr-beg): fix looking point drift.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@8614 b2dd03c8-39d4-4d8f-98ff-823fe69b080e