gr-uhd: add option to uhd_rx_cfile to write metadata file.
fixing hfx.py for proper uhd support - tuning was negative of desired change, removed  antenna tuner support
update README
analog: white-space fixes
analog: disable deemph for tau=0.0 in fm_demod
Fixed other issues with app - changes to fft display - still missing 'tune on click'
fixed click to tune, click mouse on fft display will tune to that frequency
volk: make volk's get_machine thread safe.

Sets a local struct instead of the global while searching. When found, then sets the machine.

This assumes that the pointer assignment is atomic, which it probably is on almost any platform.
Merge branch 'maint'
volk: follow-up to commit cb4142d45 for added volk_get_machine function on master.
Merge remote-tracking branch 'stiabhan/uhd_rx_cfile'
cmake: fixed ICE 3.4 version check for GCC < 4.7.
volk: remove unused spu_lib directory from VOLK.

Addresses Issues #638.
volk: add regex option to profile

If the given regex does not match any substring in a kernel name
then return 0 from run_volk_tests, otherwise execute the tests.
Defaults to a regex of .* to run everything, and no regex which
also runs everything for QA.
digital: HPD now supports time- and other special tags, can mark rx-time of packets
digital: HPD consume-behaviour adapted to allow for trigger jitter
Merge remote-tracking branch 'cswiger/master' into hfx
grc: For "No GUI" option, you can now choose which terminal type you like
grc: move xterm pref to Constants.py
grc: format xml fail msg to support python 2.6

In Python 2.6 arguments are needed in the string being formatted, otherwise the error message causes another error.