Fix autotools install process. Ugh.
Restore the -a option.
Python indentation misled me as to its meaning. It's meant to only
output valid messages. But for some reason it doesn't even do that.
Remove more autotools cruft, new readme.
Remove autotools cruft where make distclean failed.
Eric Cottrell's Mode S decoding for GNU Radio.
Incompletely ported to GNU Radio 3.2.