Add meta character to represent current file for touch to use with /r

Now that you've added the ability for touch to use the date and time from a file with /r how about some type of meta character to allow it to use the current file for /r
touch /d:c /t:c /r:wf /s files.
where the f indicates to use the current file. Then this can be contained and not need a loop to really use the new syntax.