SDLPOPX v1.22 rebase

Rebase to latest upstream SDLPoP. Specifically NagyD@211796b

Full Changelog: https://github.com/Ryzee119/SDLPoP/commits/v1.22

First Release

SDLPoPX build for Original Xbox. A port of Prince of Persia for DOS, based on SDLPop by Nagy.

Windows and Linux binaries provided too, although the function the same as SDLPoP by Nagy the only difference is replays and screenshots are disabled for these builds.