Add tests to dicttool test.

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

...com/android/inputmethod/latin/UserHistoryDictIOUtils.java

.../com/android/inputmethod/latin/UserHistoryDictionary.java

...ndroid/inputmethod/latin/UserHistoryDictIOUtilsTests.java

...android/inputmethod/latin/makedict/BinaryDictIOTests.java

...id/inputmethod/latin/makedict/BinaryDictIOUtilsTests.java

tools/dicttool/Android.mk

tools/dicttool/compat/android/test/AndroidTestCase.java

tools/dicttool/compat/android/test/MoreAsserts.java

...ompat/android/test/suitebuilder/annotation/LargeTest.java

tools/dicttool/compat/android/util/Log.java

...tool/src/com/android/inputmethod/latin/dicttool/Test.java

...roid/inputmethod/latin/makedict/FusionDictionaryTest.java