MFC r245751,245893:

MFC r245751,245893:

r245751:
Implement the -l option using ln(1) to facilitate boostrapping.

Ignore the new options -D, -h, -T, and -U.  Adjust -M support to ignore
an argument.

Sponsored by:	DARPA, AFRL
Reviewed by:	ian, ray, rpaulo

r245893:
Use = not == in test arguments.

Submitted by:	Christoph Mallon <christoph.mallon@gmx.de>

git-svn-id: svn://svn.freebsd.org/base/stable/9@248332 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f