[Darwine] wine-pthread working on MacOSX

[emmanuel m. <e....@li...>]

Hi,

This patch make thread working on MacOSX using wine-pthread :
thread tests give me 15 failures on 110 tests with wine-20040716 and 
this patch (my previous one too),
still better than 65 failures on 95 tests with wine-20040615.
This allow us to use Desktop display too.

This patch remove granularity check in NtAllocateVirtualMemory for 
Darwin, because teb can be alloc at
address < granularity_mask (0xffff)

emmanuel

Changelog :
	Don't check granularity in NtAllocateVirtualMemory for Darwin host.