windows: add support for cpu times to uv_cpu_info()
windows: add support for cpu times to uv_cpu_info()

* Also cleans up the code and makes it use unicode APIs consistently.
* Credits go to Brian White for creating an earlier version of this
  patch.

Closes #327

urbit/archaeology2,unknownbrackets/maxcso,urbit/archaeology2,urbit/archaeology2,unknownbrackets/maxcso,urbit/archaeology2,urbit/archaeology2,urbit/archaeology2,urbit/archaeology2,unknownbrackets/maxcso,unknownbrackets/maxcso,unknownbrackets/maxcso,urbit/archaeology2,urbit/archaeology2,unknownbrackets/maxcso,unknownbrackets/maxcso