Fix TWL dump filenames; add versions to CTR dump filenames and some other fixes.

[GerbilSoft]

This PR fixes TWL dump filenames. When product version was added, a maximum field width wasn't specified, so the unitcode ends up getting appended, and that confuses some of the FatFS code.

Some additional changes:

• Append CTR versions to dump filenames. (Located at 0x312.)
• Use decimal for the version numbers instead of hexadecimal.
• For trimmed TWL dumps, use the TWL used size instead of the NTR used size, since the NTR used size doesn't include the TWL-specific area.

[d0k3]

Two things: (1) don't change the NcsdHeader struct like that. The NCSD header is 0x200 bytes, simply enlarging it is bound to lead to problems later on. And yes, I know I had a typo there. (2) I found no resources on the version number being there. At least it is not on 3dbrew. Do you have any more info?

EDIT: just to clarify this - I don't think the version being @0x312 is wrong. I did, however, check 3 cart dumps and just found zeroes there, so I need at least one resource to back this offset

[GerbilSoft]

I reverted the NcsdHeader change. Version number is now accessed with a (u8*) cast.

@einstein95 gave me the information for the version number a while back so I could add support in https://github.com/GerbilSoft/rom-properties . I've compared it to the version number on the back of the cartridge (7th digit) and it matches each one I have, including Smash Rev.05 and Sonic Generations Rev.01.

[d0k3]

Well... you put the typo back in :). The last last "reserved" in that struct has to be 0x30 byte, not 0x40 byte as 3dbrew says. Can you just make this little change? I'll take this pr then.

[GerbilSoft]

Fixed the field.