Pass all locale information down to Minikin

Previously, locale lists and LocaleSpans were ignored in deciding line
breaking and hyphenation in layouts.

Now, we pass both changing locale information and the whole locale
list to Minikin.

Fixes: 21571721
Bug: 25122192
Test: adb shell am instrument -w -e package android.text com.android.frameworks.coretests/android.support.test.runner.AndroidJUnitRunner
Change-Id: Ia93b0b7cbe54de65bb0ec4937e65cc7993559a6f