AppleSingle/AppleDouble support?

[uliwitness]

With an eye towards the dream of eventually getting this to run on other platforms with non-HFS file systems: Any chance of making mpw support writing not to two-fork files with data and resource fork, but to AppleSingle or AppleDouble (or heck, .hqx or .sit if you wanna invest the extra work)?

That would probably require also being able to write resource forks by ourselves, like ResForge does it.

Feel free to close this if it's way too early to think about this, just thought I'd put the idea in your head.