Rename BinaryDictionaryBigramsReadingUtils to BinaryDictionaryTerminalAttributesReadingUtils and remanme the class methods

Bug: 6669677
Change-Id: I960dcf51a950ead2c3d7b9dedcde0a450569cbe9
diff --git a/native/jni/Android.mk b/native/jni/Android.mk
index fb60139..d5df6b6 100644
--- a/native/jni/Android.mk
+++ b/native/jni/Android.mk
@@ -53,10 +53,10 @@
         dic_nodes_cache.cpp) \
     $(addprefix suggest/core/dictionary/, \
         bigram_dictionary.cpp \
-        binary_dictionary_bigrams_reading_utils.cpp \
         binary_dictionary_format_utils.cpp \
         binary_dictionary_header.cpp \
         binary_dictionary_header_reading_utils.cpp \
+        binary_dictionary_terminal_attributes_reading_utils.cpp \
         bloom_filter.cpp \
         byte_array_utils.cpp \
         dictionary.cpp \