Merge "Fix string iterations in a couple places."

...com/android/inputmethod/latin/BinaryDictionaryGetter.java

java/src/com/android/inputmethod/latin/SettingsValues.java

java/src/com/android/inputmethod/latin/WordComposer.java

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

tests/src/com/android/inputmethod/latin/InputLogicTests.java

...t/src/com/android/inputmethod/latin/FusionDictionary.java