Merge pull request #1 from ckolivas/master

Sync with new upstream version
Revert "Merge pull request #609 from jaketri/master"

This reverts commit a8857bb27d6f14fb178bf71b956af864fd23af11, reversing
changes made to 2f007cb685ab8c5728ece2acb269d6eec3e888e5.
News update
Bump version to 4.4.0
Merge branch 'master' of https://github.com/ckolivas/cgminer
Hashfast voltage support
Merge pull request #612 from jaketri/master

Hashfast voltage support.