Pass Kernel#system spec on Windows
Pass Kernel#system spec on Windows

ruby/spec,sgarciac/spec,nobu/rubyspec,eregon/rubyspec,kachick/rubyspec,ruby/rubyspec,nobu/rubyspec,kachick/rubyspec,nobu/rubyspec,ruby/rubyspec,wied03/rubyspec,ruby/spec,wied03/rubyspec,sgarciac/spec,eregon/rubyspec,kachick/rubyspec,sgarciac/spec,ruby/spec,wied03/rubyspec,eregon/rubyspec