Add a lscpu(1) utility program.

[kzak@redhat.com:
	- indent by linux-2.6/scripts/Lindent
	- add lscpu.{c,1} to sys-utils/Makefile.am
	- add NLS suport
	- complete code refactoring
]

Co-Author: Karel Zak <kzak@redhat.com>
Signed-off-by: Cai Qian <qcai@redhat.com>
Signed-off-by: Karel Zak <kzak@redhat.com>