Revert "EEPROM library to the new format"

This reverts commits:
3223d4fdca32ec03de4a3a2a0c22f2d40de5f374
77f8dd63ab102ab5d2929ac4edd5c00ae9d70493
Revert "SPI library to new format"
Detect version of bridge.py running on the Yun.
Update version to 1.5.5 (Base.java)
Added missing File::size() method to Bridge.
Fixed typo
Implemented multi-byte read in File::read of Bridge library.