Rename the attributes tables and give them descriptions. (dm)


git-svn-id: svn://mielke.cc/main/brltty@7293 91a5dbb7-01b9-0310-9b5f-b28072856b6e
Add the upper_lower attributes table. (dm)


git-svn-id: svn://mielke.cc/main/brltty@7294 91a5dbb7-01b9-0310-9b5f-b28072856b6e
Clarify the attributes tables' descriptions. (dm)


git-svn-id: svn://mielke.cc/main/brltty@7295 91a5dbb7-01b9-0310-9b5f-b28072856b6e
Update the Android descriptions of the attributes tables. (dm)


git-svn-id: svn://mielke.cc/main/brltty@7296 91a5dbb7-01b9-0310-9b5f-b28072856b6e