added wbpsk capability
showing some love to examples
Merge branch 'master' of github.com:n-west/gnuradio

Conflicts:
	gr-digital/include/digital_constellation.h
	gr-digital/include/digital_mpsk_snr_est_cc.h
	gr-digital/lib/digital_constellation.cc
	gr-digital/python/CMakeLists.txt
	gr-digital/python/__init__.py
	gr-digital/python/generic_mod_demod.py
	gr-digital/swig/digital_constellation.i