New snapshot of the CPU performance monitoring counter work

[Joseph Koshy]

A new snapshot of the CPU PMC driver and associated userland tools
is available.

o Support for performance monitoring counters in Intel(r) Pentium 
  Pro, Pentium-II, Pentium-III, Celeron and Pentium-M has been
  added.

o A Python interface to libpmc has been added.

o Many bug fixes, esp. for P4/HTT CPUs.

http://people.freebsd.org/~jkoshy/projects/perf-measurement/snapshot-6.html