Log the name of the save operation, not just #.

Makes it a lot easier to read...
Reduce log level of some tested sceFont funcs.
Return proper SIZES info for existing savedata.

Fixes Fieldrunners saving/loading.
Always count one cluster for usedata in SIZES.

This matches values coming out of hardware... seems to make sense.
Merge pull request #5665 from unknownbrackets/savedata

Fix SIZES savedata mode + minor logging