Revison 1
Deletes all files and folders from a directory, including read-only and
hidden files and folders. DelAll starts in the directory you tell it,
removes all read-only and hidden attributes from all the files, removes
all of the subfolders and then all files therein. When DelAll is done,
you will be left in the directory from which you called DelAll. The
directory that you want cleaned will not be deleted.