am 225745d4: Merge "Step 1 to implement GC. Finding garbage PtNodes."

native/jni/Android.mk

...l/dictionary/dynamic_patricia_trie_gc_event_listeners.cpp

...mpl/dictionary/dynamic_patricia_trie_gc_event_listeners.h

...yimpl/dictionary/dynamic_patricia_trie_reading_helper.cpp

...icyimpl/dictionary/dynamic_patricia_trie_reading_helper.h

...yimpl/dictionary/dynamic_patricia_trie_writing_helper.cpp

...icyimpl/dictionary/dynamic_patricia_trie_writing_helper.h