Introduce SuggestionResults and use it for predictions.

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

native/jni/NativeFileList.mk

...ve/jni/com_android_inputmethod_latin_BinaryDictionary.cpp

native/jni/src/suggest/core/dictionary/bigram_dictionary.cpp

native/jni/src/suggest/core/dictionary/bigram_dictionary.h

native/jni/src/suggest/core/dictionary/dictionary.cpp

native/jni/src/suggest/core/dictionary/dictionary.h

native/jni/src/suggest/core/result/suggested_word.h

native/jni/src/suggest/core/result/suggestion_results.cpp

native/jni/src/suggest/core/result/suggestion_results.h