Merge "Use slightly dimmed text color for functional keys"

java/res/values/attrs.xml

java/res/values/themes-ics.xml

java/res/values/themes-klp.xml

java/res/values/themes-lxx.xml

java/res/xml-sw600dp/key_styles_common.xml

java/res/xml-sw600dp/key_styles_enter.xml

java/res/xml/key_styles_common.xml

java/res/xml/key_styles_enter.xml

java/res/xml/key_styles_number.xml

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

.../android/inputmethod/keyboard/internal/KeyDrawParams.java

...id/inputmethod/keyboard/internal/KeyVisualAttributes.java