createInterpreter in a DLL

[bobd]

@zetashift \- thanks I'll take a look

@dsrw \- thanks I need nimrtl because there will be other Nim DLLs, but I'd 
tried anyway and it still crashes. I've cut the code right back to the minimum:
    
    
    let std = findNimStdLibCompileTime()
    let intr = createInterpreter("script.nim", [std])
    
    intr.destroyInterpreter()
    
    
    Run

I get the AV (the classic C0000005) at createInterpreter - if I comment-out 
this line it runs fine.

I don't build with --noMain because I use auto-init of the GC. I just tested to 
check though and it still crashes.

Are you building for 32 or 64-bit?