Unbreak build - this can only build on i386 as-is due to use of libl in
a .so file, and we currently (intentionally) only build libl.a.
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