gen_dummy_probes.rb

* tool/gen_dummy_probes.rb: remove empty lines and compact.

* tool/gen_dummy_probes.rb: allow arbitrary number of arguments.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39719 b2dd03c8-39d4-4d8f-98ff-823fe69b080e