The Arduino Mega 2560 is now supported in addition to the regular
Arduino. The Mega supports 8 channels and 7k samples. The ols.profile-*
files are device profiles for the alternative SUMP client. 'AGLA' =
Arduino 'AGLAM' = Arduino Mega
Change to using an array of bytes instead of integers. Retune
timing loops now that each sample is not doing a 16 bit update.
We can now record 1024 samples easily.
