Return NULL from OpenThreadToken.

Create xterm even if stdin is not a terminalhandle.
SetConsoleCursorPosition: Only make complex console on row change,
ignore interline positioning (so the cygwin cmdline tools do not
create xterms unnecessary)

- One message queue for every thread needing it.
- Messages in the message queue are now stored in a linked list
- Messages are allocated in the system heap.
- Messages in the message queue are 32 bits (MSG32).
- All read/write operations regarding messages in the message queue are
  thread safe.

#if defined(linux) || defined(__FreeBSD__) || defined(__NetBSD__)
comes out false.  I moved the conditionals around so that
the file would at least compile.  Not sure if it does the
right thing on non-linux/FreeBSD/NetBSD systems.

"ERR" being redefined in sys/regset.h.

Windows does.

leaks and lost handles. Also removed some useless init code.

Added support for FONTSIGNATURE in GetLocaleInfo32A and updated
GetLocaleInfo32W.

searching for DBG and PDB files.

for debug information.

data.

DrawAnimatedRects16 (stub), FormatMessage16, WIN16_GetMessage32,
WIN16_PeekMessage32 and WIN16_TranslateMessage32.

- clean DllReferenceCount, better DllMain()
- dynamically linking LookupIconIdFromDirectoryEx32 and
  CreateIconFromResourceEx32 to USER32
- moved guid's instances to new file shellguid.c
- implemented  ShellExecuteEx32W

Size of compobj.o goes down to 1/3; should prevent more sig11's.

better. Fixes the XUnmapWindow problems reported by replacing them
with NULL ptr dereferences.

handles first. Split up Init from AllocDosHandle and call it from
the DOSVM.