Only darwin supports birthtime
Only darwin supports birthtime

After some research only darwin seems to support birthtime via
st_birhttimespec in the stat struct.

See https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man2/stat.2.html
and https://github.com/ruby/ruby/blob/fc7711ff17cde31aec0e2c1d29faca264b49da6b/file.c#L829 for reference.

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