Third call for platform testing

We've got most platforms ironed out, with just a few left to get a
definitive report. It looks like we'll end up dropping a few platforms
for this release (the first time in several years that the number of
supported platforms decreased!).

The problem platforms with comments and questions are:

Linux/arm Mark Knox
Obsolete platform? gcc no longer supported?
Linux/s390 Neale Ferguson
Likely small user base.
Anyone actively running on S390?
NetBSD/arm32 Patrick Welche
NetBSD/m68k Bill Studenmund
Bill, you thought you might get the old iron tested.
Any luck?
NetBSD/VAX Tom I. Helbekkmo
Any VAXen out there nowadays?
QNX Bernd Tegge, Igor Kovalenko
Anyone tested 4.x with 7.2,
or are we stuck with QNX6 needing patches?
SunOS Tatsuo Ishii
Are we giving up on this one? Still relevant?
Windows/Cygwin Daniel Horak
OK in serial test, trouble with parallel test?
Showstopper??
Windows/native Magnus Hagander (clients only)
Any reports?

And those reported as successful:

AIX Andreas Zeugswetter (Tatsuo working on 5L?)
BeOS Cyril Velter
BSD/OS Bruce
FreeBSD Chris Kings-Lynne
HPUX Tom (anyone tested 11.0 or higher?)
IRIX Luis Amigo
Linux/Alpha Tom
Linux/MIPS Hisao Shibuya
Linux/PPC Tom
Linux/sparc Doug McNaught
Linux/x86 Thomas (and many others ;)
MacOS-X Gavin Sherry
NetBSD/Alpha Thomas Thai
NetBSD/PPC Bill Studenmund
NetBSD/sparc Matthew Green
NetBSD/x86 Bill Studenmund
OpenBSD/sparc Brandon Palmer
OpenBSD/x86 Brandon Palmer
SCO OpenUnix Larry Rosenman
Solaris/sparc Andrew Sullivan
Solaris/x86 Martin Renters
Tru64 Alessio Bragadini (trouble with 5.1?)