port-i386/49246: x86/x86/procfs_machdep.c is very old.

[msaitoh%amd64.execsw.org@localhost]

>Number:         49246
>Category:       port-i386
>Synopsis:       x86/x86/procfs_machdep.c is very old.
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    port-i386-maintainer
>State:          open
>Class:          change-request
>Submitter-Id:   net
>Arrival-Date:   Tue Sep 30 08:00:00 +0000 2014
>Originator:     msaitoh%amd64.execsw.org@localhost
>Release:        NetBSD 7.99.1
>Organization:
>Environment:
>Description:
	sys/arch/x86/x86/procfs_machdep.c have not maintained, so it's
	not a good way to check a CPU's feature with /proc/cpuinfo.

	An workaround is to use "cpuctl identify" command.
>How-To-Repeat:
	cat /proc/cpuinfo
>Fix:
	Sync with the latest spec.
	Almost the same code exists in src/usr.sbin/cpuctl/arch/i386.c
	but the output format is completely different.