Code review comment for lp:~macslow/unity8/shellRotation

While the last commit (r1616) does indeed greatly improve the reliability of the faked "right up"-orientation, we still suffer from the hiccups due to the cached qml. One has to really unset $QV4_ENABLE_JIT_CACHE before running the shell-rotation ap-tests. Just assigning a value of 0 to that environment variable won't be enough.