Change the state allocator from using regular malloc to using a UMA zone instead. This should eliminate a bit of the locking overhead associated with with malloc and reduce the memory consumption associated with each new state.
Change the state allocator from using regular malloc to using
a UMA zone instead. This should eliminate a bit of the locking
overhead associated with with malloc and reduce the memory
consumption associated with each new state.

Reviewed by:	rwatson, andre
Silence on:	ipfw@
MFC after:	1 week

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