before detach pid. [ruby-talk:71519]

* eval.c (PUSH_FRAME): save outer ruby_block. [ruby-list:37677],
  [ruby-dev:20202]

* eval.c (BEGIN_CALLARGS): restore outer block by using
  ruby_block->outer.

* eval.c (block_pass): do not alter block->prev, but block->outer.

* array.c (get_inspect_tbl): warning on wrong condition.

* eval.c (localjump_xvalue): renamed exitstatus to exit_value
  since it's not exit "status" after all.

* eval.c (localjump_error): add reason to LocalJumpError.

* compar.c (rb_cmpint): raise error via rb_cmperr(), if cmp value
  is nil. now take new 2 arguments.

* time.c (time_cmp): 2003-05-16 fix was incomplete.
  (ruby-bugs-ja:PR#458)


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3823 b2dd03c8-39d4-4d8f-98ff-823fe69b080e