Option to move mp4 file when all conversion and tagging is complete

Another workaround for iTunes. Thank you so much for adding the "output directory" function, however it's not quite right for use with iTunes. The issue is that iTunes will detect the file before you've finished tagging it and you'll end up with an untagged file in iTunes. One way to get around this is to move the file when it's finished processing. With this patch I can set the output directory to I:\Temp and then the move directory / final destination to I:\Automatically Add to iTunes. Does this seem reasonable?