Change JNI for Gesture

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

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

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

...android/inputmethod/latin/ExpandableBinaryDictionary.java

...c/com/android/inputmethod/latin/ExpandableDictionary.java

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

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

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

...ve/jni/com_android_inputmethod_latin_BinaryDictionary.cpp

native/jni/src/dictionary.h