Turns out there was already verbose/ultraverbose support in specFile(Double).

* Use specFile/specFileDouble verb/ultraverb to control that in pofdMCMC/
  pofdMCMCDouble
* Change beam histogramming to on by default in both types of specFile
Add unistd.h to global_settings so it knows what useconds_t is.
Merge branch 'base'
Forgot to initialize initfile/specfile in constructor.
Fix bug in setting number of fixed/ignored params.
Merge branch 'base'
Fix bug where initChains was being called multiple times, to bad
 results.
Doc update for affineEnsemble::sample
Merge branch 'base'
Add checks for monotonic knot positions, fix bug in
numberCountsKnotsSpline::send/recieve

* The GSL requires that knot positions be monotonically
  increasing (or decreasing, but I ignore that), so check
  when setting positions.
* The log knot positions were only being sent when the knot
  -values- were loaded, which was wrong.