Merge branch 'utils' of http://gnuradio.org/git/trondeau into master
Fixed slider behavior when the end of the file is reached.
Handling a few exceptions when no file is loaded.
tweaked ampl slider params
copied usrp_siggen stuff from experimental gui into gnuradio tree
removed qr_fft.py from gr-utils
Can now change the size of the symbols. Also fixes some layout issues.
Adding ability to change line width and style (only a handful of current styles enabled).
Removing plot picker that addd nothing to the interface.
Adding a Reload option (Ctrl+R) option to quickly reread the file and reset the state.
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