Display var info instead of var+unbound

[max-lv]

A picture is worth a thousand words.

Also when you click on Debug:LogError, offending gameobject is highlighted in unity's scene hierarchy.

[max-lv]

Here you can see deep profiling for 1k gameobjects with :update hook.

Both versions run at about the same speed, with try/catch sometimes slower by 0.1-0.5ms (100-500ns per gameobject).

Hook used:

(defn empty-update-hook [obj])