some changes/updates to PlotFr

PlotFR was setup for use with 3 input channels of data, now detects # of
channels and adjusts accordingly
some fixes in merge conflicts
	new file:   .gitignore
	modified:   FFT/buildfft.m
	modified:   FFT/synverse.m
	modified:   Synthesis/synmononoise_fft.m
took out old stuff in buildfft
minor
created synmonosweep
minor
updates to buildfft and synverse
Merge remote-tracking branch 'origin/gerbil'

Conflicts:
	FFT/buildfft.m
fixed stupid bug in L/R enable option
minor fixes
updated gitignore