MFC r289867:
Remove an erroneous semicolon.

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Generalize the bitset operations, present in cpuset and offer a KPI to
redefine such operations for different consumers.
This will be used when NUMA support will be finished and numaset
will need to be used.

Sponsored by: EMC / Isilon storage division
Obtained from: jeff
Reviewed by: alc