Refactored unsigned long bitmasking

[LiborB]

Refactored unsigned long bitmasking by extracting bitmasking logic to a utility method. Resolves #723

[codecov-io]

Codecov Report

Merging #724 into master will increase coverage by 0.01%.
The diff coverage is 100%.

@@             Coverage Diff              @@
##             master     #724      +/-   ##
============================================
+ Coverage     82.52%   82.53%   +0.01%     
  Complexity      198      198              
============================================
  Files            28       28              
  Lines          1528     1529       +1     
  Branches        225      225              
============================================
+ Hits           1261     1262       +1     
  Misses          128      128              
  Partials        139      139

Impacted Files	Coverage Δ	Complexity Δ
oshi-core/src/main/java/oshi/util/ParseUtil.java	94.97% <100%> (+0.02%)	0 <0> (ø)	⬇️
...hi-core/src/main/java/oshi/hardware/NetworkIF.java	81.42% <100%> (ø)	0 <0> (ø)	⬇️

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[coveralls]

Coverage increased (+0.006%) to 90.451% when pulling 77a45dd on LiborB:refactor-unsigned-long into 3866c16 on oshi:master.

[dbwiddis]

Looks great! I made a few tweaks and will merge shortly. Thanks for your contribution to open source!

[LiborB]

Thanks for letting me! Will continue to help where I can.