Fixed some missing %p and some pointer arithmetic issues

[j256]

Thanks to @aitap .

[j256]

Does this pull request fix the issues @aitap ? It works around the necessity of %lld support: #34

[aitap]

Sorry for not responding right away and for this issue being so persistent.

The only serious warning left on 64-bit Windows is:

In file included from env.c:44:0:
env.c: In function ‘_dmalloc_address_break’:
env.c:115:23: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
   SET_POINTER(addr_p, (DMALLOC_PNT)hex_to_long(addr_all));

...because on 64-bit Windows, sizeof(long) < sizeof(void*) and a 64-bit hex string denoting a pointer might not fit in a long. A fix I suggested is here, part of a larger commit, but there are probably other ways to solve it.

There are warnings left on 32-bit Windows, but since it's sizeof(PNT_ARITH_TYPE) > sizeof(void*) there, they are probably harmless and can probably be left alone in the interest of portability to the rest of the world with pointer-sized longs.

[j256]

Thanks @aitap . Can you check out #38? Does that resolve other warnings. I'm working on env.c now.

[aitap]

I should probably warn you that the same hex_to_long function exists in dmalloc_t.c, so it'll need an identical fix.

[j256]

Thanks @aitap . I got both of them.