Merge branch 'master' into wip/burx_support

Merge branch 'master' into wip/burx_support

* master: (39 commits)
  Add gru.hexshort to deal with short hex constants
  Assign USB PID for Hans de Bok
  Add missing buffer allocator hint to gr_ofdm_sampler.cc
  Really fix the missing include for boost::bind
  gr-wxgui: Added additional color table entries
  Missed updates for omnithread/mblock removal
  Remove omnithreads library.
  Remove mblock library.  We hardly knew 'ye.
  Convert gr-audio-portaudio to Boost via gruel
  Further updates for removing omnithreads
  Update build configuration for OSX omnithreads changeover
  Add missing include file for boost::bind
  Convert gcell to use boost::threads instead of omnithread.
  Fix sequence error indication after stopping then restarting streaming on USRP2.
  initial move from mld_threads to gruel:: namespace threads and such
  Initial changes to remove mld_thread and instead use gruel:: namespace classes
  Fixing doxygen warnings from arb_resampler. Also, removed set_taps from public
  Fixing doxygen warnings from channelizer block.
  Fixing documentation to get rid of doxygen warnings.
  Adding documentation for fff version of othe PFB clock sync algorithm.
  ...