add spec for Process.spawn redirecting STDERR to child STDOUT
add spec for Process.spawn redirecting STDERR to child STDOUT

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