K 10
svn:author
V 3
avg
K 8
svn:date
V 27
2011-06-06T14:23:13.257502Z
K 7
svn:log
V 336
don't use cpuid level 4 in x86 cpu topology detection if it's not supported

This regression was introduced in r213323.
There are probably no Intel cpus that support amd64 mode, but do not
support cpuid level 4, but it's better to keep i386 and amd64 versions
of this code in sync.

Discovered by:	pho
Tested by:	pho
MFC after:	2 weeks

END