[winecfg 8] Complete drive edit dialog, warn on lack of C drive, implement drive delete, code cleanups

[Fabian Cenedese]

>3. I know the load order page isn't finished yet, but a dropdown box for the 
>load order with the options "builtin then native" and "native then builtin" 
>would be better than the radio buttons (but we should keep the explanation 

I haven't tried yet I was just wondering: What happens if a user selects
native, builtin but hasn't a copy of the MS-DLL? Nothing, wine then just
loads the native. Is it possible to just enter native (without builtin) so wine
prints an error if the MS-DLL is not found? I'm sure that many people would
just change this setting and forget to (or don't even know they have to)
copy the dlls from a Windows system.

bye  Fabi