Ruby

• include/ruby/intern.h (rb_run_exec_options_err): renamed from
  rb_run_exec_options.
  (rb_exec_err): renamed from rb_exec.
  (rb_fork_err): renamed from rb_fork.
  (rb_spawn_err): renamed from rb_spawn.
  (rb_run_exec_options): declared with 1.9.1 compatible signature.
  (rb_exec): ditto.
  (rb_fork): ditto.
  (rb_spawn): ditto.

• process.c (rb_run_exec_options_err): renamed from
  rb_run_exec_options.
  (rb_exec_err): renamed from rb_exec.
  (rb_fork_err): renamed from rb_fork.
  (rb_spawn_err): renamed from rb_spawn.
  (rb_run_exec_options): defined.
  (rb_exec): ditto.
  (rb_fork): ditto.
  (rb_spawn): ditto.

• io.c: follow above change.

• ext/pty/pty.c: follow above change.

  [ruby-dev:37893]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@22078 b2dd03c8-39d4-4d8f-98ff-823fe69b080e