made genkernel.sh mkdir out if it doesn't exist

genkernel.sh

@@ -1,4 +1,5 @@
 #!/bin/bash
+mkdir -p out/
 for f in `dir -d configs/*`; do
  kn=$(echo $f | cut -f 1 -d '.' | cut -f 2 -d "/")
  ./genkernel.lua $f "$(git rev-parse --short HEAD)" > out/$kn.lua