Use BinaryDictonaryInfo instead of raw pointers.

native/jni/Android.mk

...ve/jni/com_android_inputmethod_latin_BinaryDictionary.cpp

native/jni/src/bigram_dictionary.cpp

native/jni/src/bigram_dictionary.h

native/jni/src/suggest/core/dicnode/dic_node_utils.cpp

native/jni/src/suggest/core/dicnode/dic_node_utils.h

.../src/suggest/core/dictionary/binary_dictionary_format.cpp

...ni/src/suggest/core/dictionary/binary_dictionary_format.h

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

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

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

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

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

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

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

native/jni/src/suggest/core/policy/weighting.cpp

native/jni/src/suggest/core/session/dic_traverse_session.cpp

native/jni/src/suggest/core/session/dic_traverse_session.h

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

native/jni/src/suggest/policyimpl/typing/typing_weighting.h