Autopickup by misc evokable type

[Sprucery]

Currently there's no point in picking up a misc evokable if you already have one in inventory (except for sacks and boxes). For example, if I have a phial, I want to pick up other types but not phials. Therefore I suggest that misc evokables are assigned their own category in the '\' menu, where you can select which types to autopickup. Even better, picking up one should automatically switch autopickup off for that type (not for sacks or boxes).

[Rast]

I also suggest that sacks and boxes stack, like phantom mirrors already do.

[Sprucery]

Oh, I forgot mirrors (probably because the only time so far I wanted to use one Fedhas refused my attempt to clone an ancient lich...).

Stacking boxes and sacks would be nice, yeah. It would also be a slight buff (a pretty small one imo).

[Kate]

Even better, picking up one should automatically switch autopickup off for that type (not for sacks or boxes).

This is already the case, if you put them on autopickup in your config then it's automatically turned off when you've picked up one.

[johlstei]

Can we make these unrands yet? Was there really a good reason to code an autopickup special case rather than setting whatever flag? (Maybe making something an unrand is harder than that, so I could be wrong.)