35bfedeaba
1. Seperated touch exploration to be a seperate setting rather being magically enabled by the system of accessiiblity is on the there is at leas one accessibility service that speaks enabled. Now there is a setting for requesting touch exploration but still the system will enabled it only if that makes sense i.e. accessibility is on and one accessibility service that speaks is enabled. 2. Added public API for checking of touch exploration is enabled. 3. Added description attribute in accessibility service declaration which will be shown to the user before enabling the service. 4. Added API for quick cloning of AccessibilityNodeInfo. 5. Added clone functionality to SparseArray, SparseIntArray, and SparseBooleanArray. bug:5034010 bug:5033928 Change-Id: Ia442edbe55c20309244061cd9d24e0545c01b54f