Fixes #5779 with new PSPScreenShotDiag class
Alt speed slider: Remove the rounding, since native does it automatically. Don't use an integer divide.
Merge pull request #6019 from thedax/alt-slider-fix

Alternate Speed slider: don't round and don't use an integer divide.
Merge pull request #5983 from raven02/patch-34

Fixes #5779 with new PSPScreenShotDialog class
x86jit: Use a faster safemem fallback.

Really helps performance in games that use uncached addresses a lot,
without really impacting performance of most games which don't.

Of course, fastmem is faster.