base

Make elegantTextHeight xml attribute public

The elegantTextHeight attribute of TextView was made public through
Java code, but the corresponding attribute wasn't public. This patch
makes it so.

This is a fix for bug 15428791 "elegantTextHeight is hidden (not in
android.R.attr)"

Change-Id: I7011f10ae58fd2e212da9cbaca4a484f011d8fed