Matlab doesn't know about int64_t

--CAR
Initialize new channel accumulators when they come in.

--CAR
Get correct size waveforms for virtual channels.

--CAR
Stratify debug messages into levels
Initialize counter in for loop
Go back to a single VMP and use a sid2ch_ map

to figure out where to put the data.
Revert "Go back to a single VMP and use a sid2ch_ map"

This reverts commit d1818dedc247bfe1919dc2e09e002c68f7eec149.
Restore changes to VMP packet sizes.

i.e. drop the extra 8's.
--BRJ
Clean up accumulator assuming recordLength VMP buffers
Update frame size calculations.

--BRJ and CAR
Update stream IDs on virtual channels.
Misc debugging cleanup.

Also updates default VELO packet size to 16384 words.
--CAR
Re-organize directory structure a bit.

--BRJ and CAR
Path fixes from re-org.

--BRJ
Write frame sizes in set_frame().

--BRJ
transfer__waveform now takes double

snapshot returns double average too.

--CAR