Remove a couple Eclipse and Android Lint warnings

java/res/values-sw600dp/config.xml

java/res/values-sw768dp/config.xml

java/res/values/config.xml

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

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

...rc/com/android/inputmethod/latin/RichInputConnection.java

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

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

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

...oid/inputmethod/latin/makedict/BinaryDictInputOutput.java

.../android/inputmethod/latin/makedict/FusionDictionary.java

.../src/com/android/inputmethod/research/ResearchLogger.java