Unbundle Keyboard.java to BaseKeyboard.java

java/res/values/attrs.xml

java/res/xml-da/kbd_qwerty.xml

java/res/xml-da/kbd_qwerty_black.xml

java/res/xml-de/kbd_qwerty.xml

java/res/xml-de/kbd_qwerty_black.xml

java/res/xml-fr/kbd_qwerty.xml

java/res/xml-fr/kbd_qwerty_black.xml

java/res/xml-iw/kbd_qwerty.xml

java/res/xml-iw/kbd_qwerty_black.xml

java/res/xml-nb/kbd_qwerty.xml

java/res/xml-nb/kbd_qwerty_black.xml

java/res/xml-ru/kbd_qwerty.xml

java/res/xml-ru/kbd_qwerty_black.xml

java/res/xml-sr/kbd_qwerty.xml

java/res/xml-sr/kbd_qwerty_black.xml

java/res/xml-sv/kbd_qwerty.xml

java/res/xml-sv/kbd_qwerty_black.xml

java/res/xml-xlarge/kbd_popup_template.xml

java/res/xml-xlarge/kbd_qwerty.xml

java/res/xml-xlarge/kbd_symbols.xml