Adding methods to allow for locale-safe case changes.
Without ilib loaded, these do the same thing as String.toUpperCase and String.toLowerCase. These mostly exist as fallbacks in case iLib isn’t loaded.
Enyo-DCO-1.1-Signed-off-by: Blake Stephens <blake.stephens@lge.com>
Updating CHANGELOG with description of locale-aware string case transformation methods.

Enyo-DCO-1.1-Signed-Off-By: Gray Norton (gray.norton@lge.com)
Merge pull request #650 from enyojs/GF-58201-blakestephens-rc

GF-58201: Locale-aware string case methods