spark git commit: [SPARK-10118] [SPARKR] [DOCS] Improve SparkR API docs for 1.5 release

Repository: spark Updated Branches: refs/heads/master 2bf338c62 - 6511bf559 [SPARK-10118] [SPARKR] [DOCS] Improve SparkR API docs for 1.5 release cc: shivaram ## Summary - Modify `tdname` of expression functions. i.e. `ascii`: `rdname functions` = `rdname ascii` - Replace the dynamical

spark git commit: [SPARK-10118] [SPARKR] [DOCS] Improve SparkR API docs for 1.5 release

Repository: spark Updated Branches: refs/heads/branch-1.5 228e429eb - ec5d09c0f [SPARK-10118] [SPARKR] [DOCS] Improve SparkR API docs for 1.5 release cc: shivaram ## Summary - Modify `tdname` of expression functions. i.e. `ascii`: `rdname functions` = `rdname ascii` - Replace the dynamical