Log Message:
Fix void main. While here:
   - add various LP64 fixes;
   - use stdlib.h as needed instead of casting the return value of malloc;
   - fix fake-varargs printf code and use stdarg.h;
   - use system snprintf instead of included custom one;
   - tidy up symbol name conflict with log();
   - add patch comments;
   - remove some pkglint;
   - add LICENSE.

PKGREVISION -> 2.