#4 Updates for octave 7

[lostbard]

Some changes required for:
1. hex numbers now scale to the 'container' size they fit in so have issues with bitand
2. tests that check for a message for too many parameters fail because it displays a different error message.

[lostbard]

Fixed in commit a9c3bf8b14428ebc7818c2352f6b06a1bd77d359