Move PatriciaTrieReadingUtils under pt_common.

native/jni/NativeFileList.mk

...ionary/structure/pt_common/dynamic_pt_updating_helper.cpp

...onary/structure/pt_common/patricia_trie_reading_utils.cpp

...tionary/structure/pt_common/patricia_trie_reading_utils.h

...olicyimpl/dictionary/structure/pt_common/pt_node_params.h

...licyimpl/dictionary/structure/v2/patricia_trie_policy.cpp

...ictionary/structure/v2/ver2_patricia_trie_node_reader.cpp

...mpl/dictionary/structure/v2/ver2_pt_node_array_reader.cpp

...ictionary/structure/v4/ver4_patricia_trie_node_reader.cpp

...ictionary/structure/v4/ver4_patricia_trie_node_writer.cpp

...mpl/dictionary/structure/v4/ver4_pt_node_array_reader.cpp