#9 add internationalization

[Brian Fegler]

seeing as I've never done this, it might take awhile.

want to look into creating two versions, a
"non-internationalized" version, and a
internationalized version if it makes a differance in size.

if there isn't much of a diff in size, don't make
multiple versions.

[Brian Fegler]

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i think this could be done entirely in CalculatorException...