Haven't tested on XP/Vista (extended kernel) nor have I stability tested.
Let me know what bugs or issues you encounter with it.
Works on Windows 7+ natively with Aero too now. Manifests should also be fixed, and no accidental AVX2 code shipped.
I decided to revert back to SSE2 even though the issues of previous release was caused by improper mozconfig. There were weird build errors with SSE4 and even though the final product worked I am a bit suspicious of it. Also manifests should be fixed so 8.1/10 should be properly detected now.
Edit: I've made a new build with a different mozconfig. Since no real source changes, I'm not making a new release for it. This one also uses SSE3 now.