Display number of replacements and prompt for confirmation option
When checked, before a replacement operation the program will perform a first pass on the files and count how many replacements there will be. It will then prompt the user asking if they want to perform the replacement, showing this count. This option is checked by default.
Unchecking will remove a layer of protection against accidental replacing, but it will speed up the operation as only one pass of the files has to be made.