Merge "Move util classes under common"

...com/android/inputmethod/latin/common/CollectionUtils.java

...com/android/inputmethod/latin/common/CoordinateUtils.java

...n/src/com/android/inputmethod/latin/common/FileUtils.java

...src/com/android/inputmethod/latin/common/LocaleUtils.java

...thod/accessibility/KeyboardAccessibilityNodeProvider.java

...c/com/android/inputmethod/compat/SuggestionSpanUtils.java

...ndroid/inputmethod/dictionarypack/DictionaryProvider.java

...android/inputmethod/dictionarypack/DictionaryService.java

...nputmethod/dictionarypack/DictionarySettingsFragment.java

...inputmethod/dictionarypack/DownloadOverMeteredDialog.java

...com/android/inputmethod/dictionarypack/UpdateHandler.java

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

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

...om/android/inputmethod/keyboard/MoreKeysKeyboardView.java

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

...putmethod/keyboard/internal/DrawingPreviewPlacerView.java

.../keyboard/internal/GestureFloatingTextDrawingPreview.java

...nputmethod/keyboard/internal/KeyPreviewChoreographer.java

...om/android/inputmethod/keyboard/internal/MoreKeySpec.java

...method/keyboard/internal/NonDistinctMultitouchHelper.java