Merge "Move KeyboardSwitcher.getKeyboard to KeyboardSet"

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

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

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

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

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

...ndroid/inputmethod/keyboard/internal/KeyboardBuilder.java

...ndroid/inputmethod/latin/suggestions/MoreSuggestions.java

tests/src/com/android/inputmethod/latin/SuggestHelper.java

...s/src/com/android/inputmethod/latin/SuggestTestsBase.java