sphinx: Completed pmt docs.
runtime: adding getRe() method to ctrlport (get knobs whose key matches a list of regex expressions)
cmake: adding gnuradio-pmt to GnuradioConfig.cmake
fft: adding ctrlport psd probe block
digital: bugfixes to ofdm_chanest, HPD and frame EQ
qtgui: don't calculate fft unless we're plotting. Removes a lot of wasted computations.
Merge branch 'master' of git.gnuradio.org:gnuradio
Merge remote-tracking branch 'github/master'
audio: try a couple times before accepting that an alsa device is busy
digital: remove stray import from QA test
Merge branch 'maint'
Merge remote-tracking branch 'reynwar/uninstalled_imports' into merge-inplace
utils: add missing CMake include
digital: crude hack to prevent the HPD from crashing flow graphs
digital: GRC and Python bugfixes for OFDM
Merge branch 'maint-ofdm' into master-ofdm

Conflicts:
	gr-digital/include/CMakeLists.txt
	gr-digital/include/digital/CMakeLists.txt
	gr-digital/lib/CMakeLists.txt
	gr-digital/lib/header_payload_demux_impl.cc
	gr-digital/lib/ofdm_chanest_vcvc_impl.cc
	gr-digital/lib/ofdm_chanest_vcvc_impl.h
	gr-digital/python/ofdm_txrx.py
	gr-digital/python/qa_ofdm_chanest_vcvc.py
	gr-digital/swig/digital_swig.i
digital: switch crc32_bb_impl to use boost::crc_optimal library
digital: fix for crc check length
digital: qa_crc32_bb update crc32 to the correct value for standard crc-32
filter: adding grc def for low_pass_xlating_fir_filter,
analog: adding reasonable default grc parameters for quadrature_demod_cf
digital: adding reasonable default grc parameters for clock_recovery_mm_xx