Skip <> in MAKEDATA/etc. savedata modes.
Stop writing ENCRYPT_INFO.BIN, PSP doesn't do it.

We don't need it and it may confuse games.
Add error handling to the FILES savedata mode.

Not actually changed yet.
Read in the PARAMS.SFO secure file list.
Make a few variables static and CONSTANTy.
Correctly handle the file list savedata mode.
Don't mark <> file entries as non-existant.

Otherwise Load() will fail when it ought not to.
Correctly shutdown dialogs on game reset.
Merge pull request #1999 from unknownbrackets/savedata

Implement the filelist savedata mode properly + other save fixes