Fix for #442 - chipKIT Pi I2C does not work
chipKIT Pi peripheral tests complete, all passing

Fix for #442
Fix for a number of other problems that don't have issue number in chipKIT and Fubarino Mini variant files mainly
Several spelling corrections in other files.
Test report in chipKIT Pi variant folder updated with test descriptions, sketches, and test results.
Merge pull request #444 from EmbeddedMan/master

Fix for many chipKIT Pi peripheral issues