Additional changes to erase Macchina related cruft
Added a simple system IO interface to make getting and setting the
I/O ports on the shield a little easier.
Updated memcache code to work with the new 256KB EEPROM
chip used on prototype shield.
Added a whole bunch of new EEPROM locations to support
the new shield in prototyping.
Minor tweaks to main file

Took out some comments

Changed the name of some called libraries to the new names