Fix a RUBYLIB spec on Windows
Fix a RUBYLIB spec on Windows

* The ruby man-page mentions colon-separated, but it is actually
  semi-colon-separated on Windows (because "C:/dir").

nobu/rubyspec,nobu/rubyspec,ruby/spec,ruby/rubyspec,nobu/rubyspec,eregon/rubyspec,eregon/rubyspec,ruby/spec,eregon/rubyspec,ruby/spec,ruby/rubyspec