** info.rkt ignoring extra dirs

This git repo has 2 folders that should be ignored by `raco setup` and
 `raco pkg install`.
The new top-level `info.rkt` tells Racket to ignore them via:
- `setup-collects` = `raco setup` should only compile these folders
- `compile-omit-paths` = `raco pkg install` should ignore these folders

info.rkt

@@ -1,7 +1,7 @@
 #lang info
 (define collection 'multi)
+(define setup-collects '("trivial"))
 (define compile-omit-paths '(
-  "compiled"
   "icfp-2016"
   "test"
 ))