Adjust filename length

Support JiffyDOS, C64GS, and large PRGs

Timing adjustments

Experiential NTSC support. Performance optimizations using int32

Rearrange magic desk flash usage

Disk save (KimJorgensen#60)

* Basic SAVE routine by dikdom
* D71/D81 save support
* Autostart and device number setting

Support 1024k Magic Desk cartridges

Option for deleting file

Don't write empty CHIP to CRT file

Add detection of KFF in EAPI driver