GF-58201: Adding support for locale-safe string case-changing.

This change is dependent on a change to ilib, relocating CaseMapper from "Full" to "Standard".
This change is related to PR https://github.com/enyojs/enyo/pull/644 
Enyo-DCO-1.1-Signed-off-by: Blake Stephens <blake.stephens@lge.com>