A prompt is needed when copying over readonly files

[dwgras]

A prompt is needed asking the user what he wants to do when overwriting a directory or file(s) that have the attribute readonly.

Does the user want to continue or cancel the copy or move operation?

example: Some of the files are marked readonly, do you wish to proceed with the operation?

Presently, the copy/move operation fails with an error message.

Steven had this to say:

This is part of what's needed. The process is a bit more complicated in that, for safety, the check should be done before the copy/move is started. Otherwise, the destination might be partially updated before the user gets a chance to decide what to do.

[Gregg Young]

I decided not to check first because it is IO intensive for large operations and it is no worse than how we do it now. It will copy until it fails on a readonly file currently. I also added a warning for delete on readonly files. We use to just delete them.

[Gregg Young]

CS 1664