[krbdev.mit.edu #1850] redhat opteron patch: 1.3 needs casts of NULL in variadic calls

[Ken Raeburn via RT]

>From Nalin Dahyabhai:

[...]

The only real trouble spot was in the passing of arguments to the
krb5_build_principal() family of functions.  Because sizeof(pointer)
isn't the same as sizeof(int), we need to take care that the right type
of constant is used when terminating the list of arguments so that the
called function can retrieve the value correctly.  I'm attaching the
patch we're planning to use.  The test suite output looks good, let me
know if you want the full log.
[...]

On both, config.guess and config.sub needed updating so that configure
wouldn't bail out because 'x86_64-*-linux' wasn't recognized, but I
expect that'll take care of itself eventually.