Rename theme file names

java/res/drawable/btn_keyboard_key.xml

java/res/drawable/btn_keyboard_key_gb.xml

java/res/drawable/btn_keyboard_key_popup_gb.xml

java/res/drawable/btn_suggestion_gb.xml

java/res/drawable/keyboard_key_feedback_gb.xml

java/res/layout/key_preview_gb.xml

java/res/values-sw600dp/touch-position-correction.xml

java/res/values/colors.xml

java/res/values/keyboard-icons-gb.xml

java/res/values/keyboard-icons-ics.xml

java/res/values/styles.xml

java/res/values/themes-gb.xml

java/res/values/themes-ics.xml

java/res/values/touch-position-correction.xml

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