K 10 svn:author V 5 peter K 8 svn:date V 27 1995-11-02T08:37:22.000000Z K 7 svn:log V 382 Make putc and b_to_q deal with clists with no reserved blocks in a more civilised manner than panicing. This only happens as a result of another state botch somewhere else, eg: from a tty driver calling putc or b_to_q on a closed device. Apparently, it's also been implicated in a panic with a status (^T) event on ptys. This change should pretty well be in it's final form now. END