Add a missing unlock. (st)


git-svn-id: svn://mielke.cc/main/brltty@7281 91a5dbb7-01b9-0310-9b5f-b28072856b6e
make install should, if the tool set is available, install the message catalogs. (dm)


git-svn-id: svn://mielke.cc/main/brltty@7282 91a5dbb7-01b9-0310-9b5f-b28072856b6e