Merge "Add Lao keyboard"

java/res/xml-sw600dp/rows_lao.xml

java/res/xml/kbd_lao.xml

java/res/xml/key_styles_currency.xml

java/res/xml/keyboard_layout_set_lao.xml

java/res/xml/method.xml

java/res/xml/rowkeys_lao1.xml

java/res/xml/rowkeys_lao2.xml

java/res/xml/rowkeys_lao3.xml

java/res/xml/rowkeys_lao4.xml

java/res/xml/rows_lao.xml

...droid/inputmethod/keyboard/internal/KeyboardTextsSet.java

...-keyboard-text/res/values-lo/donottranslate-more-keys.xml