Idris backend for Malfunction

Compiles Idris to Malfunction

It seems to go pretty fast:

$ idris pythag.idr -o pythag-idris
$ idris pythag.idr --codegen malfunction -o pythag-malfunction
$ time ./pythag-idris  > /dev/null

real    0m13.102s
user    0m13.084s
sys     0m0.004s
$ time ./pythag-malfunction  > /dev/null

real    0m1.096s
user    0m1.092s
sys     0m0.000s
$