Cache resolved classes in PigContext
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                 Key: PIG-2496
                 URL: https://issues.apache.org/jira/browse/PIG-2496
             Project: Pig
          Issue Type: Improvement
            Reporter: Dmitriy V. Ryaboy
         Attachments: PIG-2496.patch

Our profiling shows that for large (multi-K line) scripts, a lot of time is 
spent trying to find common UDFs in resolveClassName(). This is trivial to 
cache.

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