Process affinity implementation

[dbwiddis]

Fixes #970

[coveralls]

Coverage remained the same at 81.664% when pulling b5865bd on dbwiddis:affinity into 29cfa5e on oshi:master.

[codecov-io]

Codecov Report

Merging #1041 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##             master   #1041   +/-   ##
========================================
  Coverage      77.7%   77.7%           
  Complexity        2       2           
========================================
  Files            26      26           
  Lines          1238    1238           
  Branches        159     159           
========================================
  Hits            962     962           
  Misses          206     206           
  Partials         70      70

Impacted Files	Coverage Δ	Complexity Δ
...rc/main/java/oshi/software/os/OperatingSystem.java	76.47% <ø> (ø)	0 <0> (ø)	⬇️

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