Merge "Make Keyboard aware of theme"

java/res/values/attrs.xml

java/res/values/styles.xml

java/res/values/themes.xml

java/res/xml-sw600dp/kbd_key_styles.xml

java/res/xml-sw768dp/kbd_key_styles.xml

java/res/xml/kbd_key_styles.xml

java/res/xml/kbd_qwerty_row4.xml

java/res/xml/kbd_symbols_row4.xml

java/src/com/android/inputmethod/keyboard/Keyboard.java

.../src/com/android/inputmethod/keyboard/KeyboardParser.java

...rc/com/android/inputmethod/keyboard/KeyboardSwitcher.java

java/src/com/android/inputmethod/keyboard/KeyboardView.java