Braille Memo fixes. (dm)


git-svn-id: svn://mielke.cc/main/brltty@7838 91a5dbb7-01b9-0310-9b5f-b28072856b6e
Prevent the possibility of a crash when there's no braille device. (dm)


git-svn-id: svn://mielke.cc/main/brltty@7839 91a5dbb7-01b9-0310-9b5f-b28072856b6e
Add the Bluetooth name prefix for the Braille Memo. (dm)


git-svn-id: svn://mielke.cc/main/brltty@7840 91a5dbb7-01b9-0310-9b5f-b28072856b6e