result is expected to be GetLastError() or WSAGetLastError(), so
we have to convert it to HRESULT by HRESULT_FROM_WIN32 for FAILED()
macro.
Use FormatMesssageA (ANSI version). since glog may not work with
Unicode string.

Contributed by ukai@



git-svn-id: https://google-glog.googlecode.com/svn/trunk@113 eb4d4688-79bd-11dd-afb4-1d65580434c0