timeout.rb: use UncaughtThrowError

* lib/timeout.rb (Timeout::ExitException#exception): rescue
  UncaughtThrowError which is specific for throw, instead of
  ArgumentError.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48460 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
ext/-test-/proc/super.c: rename

* ext/-test-/proc/super.c: renamed the file and maker method.
  [Feature #10195]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48461 b2dd03c8-39d4-4d8f-98ff-823fe69b080e