[PATCH] Fix ./configure script for less error-forgiving compilers

[Piotr Sikora]

Hi Igor,
attached patch fixes ./configure script for less error-forgiving compilers 
(like LLVM/clang) when they are used with -Werror option.

auto/types/sizeof:
- printf() is defined in missing <stdio.h> header,
- sizeof() returns size_t type, which has different signedness on different 
operating systems (hence %z).

auto/unix:
- setproctitle() is defined in <stdlib.h> on both: NetBSD and OpenBSD.

Best regards,
Piotr Sikora < piotr.sikora at frickle.com >
 
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