digital: scrambler gets tag support
digital: added scrambling feature to OFDM tx/rx
Merge branch 'master' of git://github.com/gnuradio/gnuradio into scrambler
digital: Python functions to support soft decision making and look-up table generation.
digital: Added a new constellation_soft_decoder block that produces soft decisions as floats instead of hard decisions.

Added documentation for how to use the new soft decision tools.
digital: added a constellation modulator that uses a constellation object to modulate samples.

The constellation object knows the constellation and symbol mappings for any constellation, not just PSK or QAM.
new volk inverse square root kernel and agc3 speedups
blocks: fixed simple documentation for blocks module (copy/paste error from gr-digital).
docs: Adding documentation for how to use the thread priority API of GR blocks.
Merge branch 'maint'
runtime: fixed bug where average Performance Counters were not being exported into Python.
runtime: exporting msg_edge_list now, too.
Merge branch 'maint'
runtime: exporing high_res_timer functions into Python (can be replaced by native Python calls with Python 3.3).
runtime: Added a Performance Counter that stores the accumulated work_time counter (work_time_total).
cmake: Fixed FindGnuradio.cmake file for new 3.7 locations of headers.

This file should actually be removed since it duplicates the functionality of the cmake-recommended GnuradioConfig.cmake file.
cmake: Fix and cleanup for new Ice library names in OSX through macports.
Merge branch 'maint'
uhd: add top-level exception reporting to uhd_fft
Fix missing module imports in error case