[slime-devel] the inspector (warning allegro and lispworks users)

i just changed the swank inspector api. inspect-for-emacs (ex inspected-parts) now takes a second argument which is an inspector object. this means that we get implementation specific inspectors where available and default generic inspectors otherwise and clears up the load order issues i was having.

i went and re-wrote all the implementation inspector methods to use the new return-value format (previously those methods were being ignored so the issue never came up). HOWEVER: I also made these changes for allegro and lispworks, even though i don't have neither an allegro nor a lispworks to test the changes on. i may very well have b0rken things.