Update Master

Latest dev improvements and bug fixes

- features:
  - +30% speed improvement in current calculation
  - improved Thermal test

- bugs fixed:
  - gcc 4.7 works now
  - minor tbg variable bug fixed
  - cuSTL gather and reduce
  - libPMAcc gameoflive2D fixed

- doc
  - git 1.7.9+ required
  - compile suite video
  - fixed headers