I am not sure if you expect from me any response to your irony.

The fact is that VC6 is able to compile libtomcrypt except camellia.c 
because camellia.c is the only place using ULL - all the rest uses macro 
CONST64.

What I am proposing is consistency.

Of course if you want to drop support for VC6 (or any other compiler not 
supporting ULL) just say so.