- use stdbool.h (partly)
- move extern declarations of data to header files
- use right types for calloc() wrapper
- remove bogus casts on return values
- remove excessive Pascal-style parentheses in conditionals
- a couple const fixes
- fix some typos in comments
Make sure that each va_start has one and only one matching va_end,
especially in error cases.
If the va_list is used multiple times, do multiple va_starts/va_ends.
If a function gets va_list as argument, don't let it use va_end (since
it's the callers responsibility).
Improved by comments from enami and christos -- thanks!
Heimdal/krb4/KAME changes already fed back, rest to follow.
Inspired by, but not not based on, OpenBSD.
