Merge remote branch 'trondeau/qtclock'

* trondeau/qtclock:
  From my reading, we should never need to define the timespec struct (so we will wait until this bites me).
  Checking for clock_gettime and timespec defined; use gettimeofday if not, but put it into a timespec structure.
  Reformatting highResTimeFunction.h for better readibility.