Save Game Manager for SEGA Saturn

Compression efficiency examples:
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King Of The Spirits 1 (jp)
	  records file: 30 blocks
	+ replay files (unlimited): 621 blocks each
	= 3756 blocks, example: 6 replays (3 tracks, each left and right) + records
	-> 245 blocks, 6.52 percent

SEGA Touring Car
	  records file: 222 blocks
	+ versus AI: 49 blocks
	+ 5x ghost file: 942 blocks each
	= 4981 blocks
	-> 490 blocks, 9.84 percent
 
SEGA Rally Championship
	  records file: 80 blocks
	+ ghost file: 977 blocks
	= 1057 blocks
	-> 165 blocks, 15.61 percent
 
Daytona USA CE (jp, XBand)
	  records file: 64 blocks
	+ ghost file: 965 blocks
	= 1029 blocks
	-> 322 blocks, 31.29 percent
 
Manx TT Superbike
	  records file: 81 blocks
	+ 4x ghost file: 470 blocks each
	= 1961 blocks
	-> 764 blocks, 38.96 percent

GT 24
	  sys file: 53 blocks
	+ ghost file: 1501 blocks
	= 1554 blocks
	-> 1232 blocks, 79.28 percent