Where clauses fix

[flupe]

The easy fix is to suffix all names with the (unique) name id.
Will do more tests to see if this also solves the problem with where clauses.

However, this means we give up on (approximate) 1:1 name correspondence.
I'm willing to lose this if this means we ensure compilation is correct, and with the custom re-mapping feature this probably isn't too bad, but idk.

[omelkonian]

For what it's worth, that's what we're also doing in agda2train.

[flupe]

Ah nice, then let's do that. Although I think we can also only do that for names that have been Agda-generated (with, \where, etc) and keep the others. Let's try and see if this breaks things.

I noticed the only \where functions that are inlined are the non-recursive one, whereas we decided to never compile them, so I'm working on fixing that.
Now Fannkuch compiles.
But still doesn't evaluate...