[kaffe] More amd64, warning fixes, cleanup

[Eric Anholt]

AMD64:
1) kaffe-support-cpp-2.diff: Fixup for the commit to avoid undefined
macro warnings for PROMOTE_* an NO_HOLES, because defined(MACRO) is true
even if MACRO is 0.  Set the macros to 0 when they're unset rather than
using defined().
2) kaffe-promote-holes.diff: Move PROMOTE_* / NO_HOLES to common.h
instead of sysdepCallMethod.h (sysdepCallMethod isn't always included by
common.h)

Warnings:
3) kaffe-stackTrace-proto.diff: kaffe/kaffevm/exception.c uses
printStackTrace, so prototype it publically.
4) kaffe-support.h-replacechar.diff: it's defined only statically, so
remove from public header
5) kaffe-verify3a.c.diff: Fixes some prototype-related warnings by
including relevant headers.

Cleanup:
6) kaffe-internalthreadsdefs.diff: USE_INTERNAL_THREADS appears to be
unused, so gc it from config/

With no patches or all but #2, I have 12/144 regression test failures.  
With #2 thrown in the mix, I'm down to 4 errors and I can run my
classes.  (no printf diffs were needed, since fixing arg passing means
printf doesn't get absurd arguments on a regular basis).

-- 
Eric Anholt                                eta at lclark.edu          
http://people.freebsd.org/~anholt/         anholt at FreeBSD.org

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