Update mac_set.3 to account for new behavior of mac_set_fd() in the context of sockets, and document EINVAL as a possible failure mode based on the object selected, not just the label provided.
Update mac_set.3 to account for new behavior of mac_set_fd() in the
context of sockets, and document EINVAL as a possible failure mode
based on the object selected, not just the label provided.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase