adapt specs for specifics platform checks
adapt specs for specifics platform checks

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