[SPARK-8784] [SQL] Add Python API for hex and unhex#7181

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davies wants to merge 6 commits intoapache:masterfrom

Commits on Jul 2, 2015

Add Python API for hex and unhex
Davies Liu
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address commments
Davies Liu
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address comments and fix test
Davies Liu
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Update math.scala
Davies Liu
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Merge branch 'master' of github.com:apache/spark into hex
Davies Liu
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Merge branch 'hex' of github.com:davies/spark into hex
Davies Liu
committed