Slime is failing to load in emacs (confirmation from another user on IRC too) with "Cannot open load file: No such file or directory, ../lib/macrostep" Not sure when this started happening, must have been in the last month or few weeks?

This patch adds the missing propagated-input, confirming it runs after that (assuming you have sbcl of course).

I'll check the QA status later and can push after some time (what's the latest on this policy?) but I'm not anticipating any issues.

Thanks!
John