[slime-devel] configurable condition printing

hi, It's useful to control what slime prints as the condition message. this can be used, among other ways, to collect and report dynamic state which is import to understanding the error but isn't readily available in the condition object. the attached patch adds a varibale *sldb-condition-printer*, which defaults to #'format-sldb-condition, to control this. -- -Marco Ring the bells that still can ring. Forget your perfect offering. There is a crack in everything. That's how the light gets in. -Leonard Cohen