Improved debug output for filebytes.

[pboothe]

Got some weird output when testing out UUID code. The hexdump is pretty inconvenient, so this moves it to being a string conversion.

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This change is 

[coveralls]

Pull Request Test Coverage Report for Build 363

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 70.956%

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Totals
Change from base Build 355:	0.0%
Covered Lines:	386
Relevant Lines:	544

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💛 - Coveralls