[SPARK-10849][SQL] Adding field metadata property to override default jdbc data source type mapping.#9352

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sureshthalamati wants to merge 2 commits intoapache:masterfrom

sureshthalamati:custom_columntype-spark-10849

Commits on Oct 29, 2015

Adding field metadata property to override jdbc data source column type mapping.
sureshthalamati
committed

Commits on Oct 30, 2015

removing space characted from input to avoid any sql injection scenarios
sureshthalamati
committed