Bind CLIP_SAVE and CLIP_RESTORE for Sun type 6 keyboards. (ml)


git-svn-id: svn://mielke.cc/main/brltty@7955 91a5dbb7-01b9-0310-9b5f-b28072856b6e
Prevent the braille driver from being restarted in the middle of an input operation. (dm)


git-svn-id: svn://mielke.cc/main/brltty@7956 91a5dbb7-01b9-0310-9b5f-b28072856b6e
Remove needless checks of the USB input wait timeout. (ml)


git-svn-id: svn://mielke.cc/main/brltty@7957 91a5dbb7-01b9-0310-9b5f-b28072856b6e
Reorder a few lines to make some code clearer. (dm)


git-svn-id: svn://mielke.cc/main/brltty@7958 91a5dbb7-01b9-0310-9b5f-b28072856b6e
Introduce a command environment stack. (dm)


git-svn-id: svn://mielke.cc/main/brltty@7959 91a5dbb7-01b9-0310-9b5f-b28072856b6e
Learn mode and messages should define their own command environments. (dm)


git-svn-id: svn://mielke.cc/main/brltty@7960 91a5dbb7-01b9-0310-9b5f-b28072856b6e