Procenv 0.28 released

Written for procenv by James Hunt on 2014-01-10

* FIX: Process ancestry now displayed on kFreeBSD by default.
* FIX: Fixes to identify AARCH64, SuperH and PPC64.
* FEATURE: Added ability to identify PPCspe and PPC64LE
  architectures.
* FEATURE: '--cpu' now displays processor affinity details (LP: #1251209).
* FEATURE: --memory/-Y added to display NUMA memory details.
* FEATURE: Lots of test improvements.