Share a few #spawn specs and use ruby_cmd over RUBY_EXE
Share a few #spawn specs and use ruby_cmd over RUBY_EXE

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