Appears to be a typo or copy/paste error? That fix was talking about Raiden Fighters 2, not Raiden II. The updates to Raiden II only made the next step easier for someone else but said step hasn't been taken yet. So Raiden II should be working just like it was in U5, no better.
Edit: I just got a message telling me the typo was in the commit log and it actually was for Raiden II. Still not playable though (missing shot gfx etc.).