Added Utility function oneOf#7

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MirkoBonadei wants to merge 3 commits intobrianhaveri:masterfrom

MirkoBonadei:master

Commits on Apr 8, 2012

Added oneof utility function with its unit tests.
MirkoBonadei
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Commits on Apr 10, 2012

Chenged method name from oneof to oneOf following the project convenctions.
MirkoBonadei
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Some minor changes to follow coding conventions
MirkoBonadei
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