file names lower-cased on cp from CD

[Joel Rees]

Not sure if this is OT or not, but I'll ask anyway.

The CD was apparently burned on a MSWxxx box with a shift-jis file
system. (At any rate, there are shift-jis file names in the mix.)

That the shift-jis file names get mojibake-d is one thing, but latin
file names throughout the CD come out all lower-case, which of course
mucks up javac.

Anybody with any ideas as to why, and as to how to get around this kind
of behavior?