Multi-processor difference between Windows versions

[Erich Hoover]

In exploring a bug in a game we* ran across an interesting difference
between how Windows versions handle a multiple-processor request.  In
essence, this supposedly invalid request will succeed on newer Windows
versions **:
SetThreadAffinityMask(curthread,(-1));

So, the question I have is whether Wine should support this behavior
as a matter of course or if it should only support this request when
the emulated version is set to Vista or greater.  It seems to me like
this should be supported as a matter of course, since anyone who uses
this "feature" is unlikely to have properly tested it on multiple
versions of Windows.  However, I'm unfamiliar with the policy on these
version-difference matters and figured I should ask before putting
something together.

Erich Hoover
ehoover at mines.edu

* http://bugs.winehq.org/show_bug.cgi?id=21165
** https://winetestbot.geldorp.nl/JobDetails.pl?Key=747