x86jit: Flush the PC before r/w in debug.

This way we get better log output.
Minor logging improvement.
Flush icache before memcpys.

Maybe there's a way to optimize this better...
Merge pull request #6503 from unknownbrackets/jit-minor

Flush the icache before memcpys
Keep track of ranges that have emuhack ops.

So that we can invalidate them smarter.
Merge pull request #6505 from unknownbrackets/jit-minor

Keep track of ranges that have emuhack ops