Added the logic for evaluating union type expressions of the type transformation language such as union(BasicType, BasicType, ...) using the old type system.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=71952535
Remove unused method newBleedingFunction.

AFAICT it has been unused for years.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=71952548