RFC: 64bit compilation warning removal

[Shaw Vrana]

Hello All,

I'm getting some compile warnings with openssh on a x86_64 GNU/Linux 
machine.  Specifically, these warnings arise b/c of improper casts in 
functions taking printf-style formatting arguments.  Replacing the 
format specifications (%u, %d, etc) with the macros in inttypes.h would 
remove these warnings.  This would also require a little bit of work 
with autoconf as well to ensure portability.  The obvious solution is to 
define the format macros in the case that inttypes.h does not exist. Is 
this an acceptable practice? and would you accept patches of this kind?

Thanks,
Shaw