[SPARK-20523][BUILD] Clean up build warnings for 2.2.0 release#17803

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Commits on Apr 28, 2017

Fix build warnings primarily related to Breeze 0.13 operator changes, "ProcessingTime" method name and Java style problems
srowen
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Commits on May 1, 2017

Revert ProcessingTimeTimeout change et al; suppress instead
srowen
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