GetAttributesOf.

the function doesn't set them to anything.

NULL, some MS sample programs depend on that.  Fix functions and
tests.

the format rect.

Minimize some calculations.

controls. Some of the tests are marked as todo.

Also help plug some memory leaks pointed out by Mike McCormack.

implement registry notifications and the strange behavior of
CloseHandle on winstation/desktop handles.

desktop, not from the parent thread.
Fixed a couple of bugs in the desktop name handling.

subdirectory.

windows/ directory.

- Fix bug with using wrong revision in security_sid_alloc.
- Add all builtin groups present in the Administrator token on Windows
  to the default token.

fd non-blocking when overlapped I/O is requested for the fd (reported
by Ivan Leo Puoti).