Change cache capacity depending on the dictionary size.

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

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

.../jni/com_android_inputmethod_latin_DicTraverseSession.cpp

native/jni/src/defines.h

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

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

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

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