added free-input "getByte" function to USART library
it's getting toooooo full now?
or what?
wholesale re-work of the spi EEPROM demo.
now it's an interactive thingy where you type into memory
doesn't demo the full library, but whatevers.
EEPROM API change: getByte -> readByte
logging thermometer -- moved menu out of mainloop, now enters on serial entry
made some functions more readable, using setbaud.h
moving all the important libraries to learningAVR
using testUART as a playground for makefile.  looks goodish
tweaked-out Makefile, now working with separate library
Merge branch 'movingLibraries'

* movingLibraries:
  tweaked-out Makefile, now working with separate library
  using testUART as a playground for makefile.  looks goodish
  moving all the important libraries to learningAVR
revamped lightSensors to match new (movingLibraries) setup
starting work on progmem code
importing source material for speech synthesis
working demos of speech synth from Cornell website
trick was realizing that PD6 is our OC0A, while its PBx on 644
rest is scaling sample rate.  piece of cake.
Cleaned up the python 2-bit DPCM routine.  Now it's awesome.
Depends on sox, though.
Tried to rationalize the AVR code a bit.  Needs more work yet.
playing around with variable speed -- locks up at high playback.  abandoning.
cleaned up after ADC fiasco
finished up tweaks to cornell code -- not popping now.  woot.
moving audio into own directory
tweaked python file to make all digits
working voltmeter.  woots.  broke out initis, globals into header