am 3895d7f8: Additional subtype ID should be independent of OS-version

...oid/inputmethod/compat/InputMethodSubtypeCompatUtils.java

...inputmethod/latin/settings/AdditionalSubtypeSettings.java

...utmethod/latin/spellcheck/AndroidSpellCheckerService.java

...droid/inputmethod/latin/utils/AdditionalSubtypeUtils.java

...roid/inputmethod/keyboard/KeyboardLayoutSetTestsBase.java

...thod/keyboard/internal/LanguageOnSpacebarHelperTests.java

.../inputmethod/latin/utils/AdditionalSubtypeUtilsTests.java

.../inputmethod/latin/utils/SpacebarLanguagetUtilsTests.java

...roid/inputmethod/latin/utils/SubtypeLocaleUtilsTests.java