[Dillo-dev] [patch] VOIDP2INT, INT2VOIDP and pointer size

Now (long) is used for converting (void *) to integer. This patch replaces (long) with intptr_t. I don't think this fixes the real problem. When VOIDP2INT and INT2VOIDP macros are used, it is possible that converted type won't fit into intptr_t. It is better to rewrite code that uses these macros in portable way and remove these macros. Anyway, using intptr_t is better than using (long), (long long) or introducing more autoconf dependency.