Add Android screen driver support for clicks, long clicks, and scrolling forward/backward. (dm)


git-svn-id: svn://mielke.cc/main/brltty@6878 91a5dbb7-01b9-0310-9b5f-b28072856b6e
The Android screen driver should group screen elements by container. (dm)


git-svn-id: svn://mielke.cc/main/brltty@6879 91a5dbb7-01b9-0310-9b5f-b28072856b6e
Use accessibility focus for the cursor location on Android. (dm)


git-svn-id: svn://mielke.cc/main/brltty@6880 91a5dbb7-01b9-0310-9b5f-b28072856b6e
Android screen driver fixes: (dm)
   Fix cursor tracking in the favourites tray.
   Fix clicking on the bottom line of special buttons.


git-svn-id: svn://mielke.cc/main/brltty@6881 91a5dbb7-01b9-0310-9b5f-b28072856b6e