[SPARK-22442][SQL][BRANCH-2.2][FOLLOWUP] ScalaReflection should produce...

[SPARK-22442][SQL][BRANCH-2.2][FOLLOWUP] ScalaReflection should produce correct field names for special characters

## What changes were proposed in this pull request?

`val TermName: TermNameExtractor` is new in scala 2.11. For 2.10, we should use deprecated `newTermName`.

## How was this patch tested?

Build locally with scala 2.10.

Author: Liang-Chi Hsieh <viirya@gmail.com>

Closes #19736 from viirya/SPARK-22442-2.2-followup.