[Arcade] Raine v0.51.15

Raine 0.51.15

• the main change is the new 7z support for the roms, and while I was at it I added it also to neoraine which means that you can now extract an iso to a 7z file and it will be accepted by neoraine. A word of caution though: it works rather well for the roms having not too many files, but the neocd isos can have really many files sometimes and in this case loading from a 7z file is really noticeably slower, so you'd better not convert everything to 7z in neocd !
  
• For the arcade roms in raine it seems to work rather well, slower than zip of course, but quite fast.
  
• Also this new version of neoraine fixes an unnoticed bug in the intro of "view point".