[vdr] Illegal Filenames on FAT

[Thorsten.Thomas.Heck@t-online.de (Thorsten Heck)]

Hi!

A small feature request: If FAT-support is compiled in, vdr should catch all 
filenames that are illegal on FAT, for example names containing an "?".

If you try to record to a file with an illegal name, vdr just stops the 
recording after getting an "Error: Invalid argument" from the makedir-request.

I hope this is not too hard to implement.

Thorsten