v1.5 - Recomp (ReXGlue) target

Converts an Xbox 360 save into a ReXGlue slot, container and all.

• New target: Recomp (ReXGlue). The save files themselves are unchanged - ReXGlue reads exactly what the Xbox 360 does - but the slot around them is different, and it is now written for you: the 328-byte slot header plus <profile>\5752084B\00000001\<slot> and Headers\00000001\<slot>.header. Nothing has to exist there first.
• The slot keeps its name. Game: 3 is read out of xenia own STFS header, so the slot does not come up named after its folder.
• ReXGlue slot picker to choose which slot to land in.
• Options files are never written into a recomp save - ReXGlue own build writes those, and another machine copies are what make Load Game show an empty slot.
• Fixed: options files were being dropped between platforms. Each one carries its own version, unrelated to the save revision, so they were failing the revision converter. Carrying settings between Wii U and Xbox 360 works again.

Aim at a slot ReXGlue has loaded before and copy the result in by merging, not by replacing the folder. A slot the recomp created but never committed a save to - made, then quit before the intro cutscenes finish - cannot be loaded at all; that is a recomp bug, not a converter one. Close the game before swapping files.