Better diagnostics in dir_copy()

[drghirlanda]

I was getting errors in dir_copy() during deployment, but there was no indication of which files would not copy. I added some diagnostics to print out the files that cannot be copied. In my case, it was a file named something like .#xxxx

[merlinoa]

Awesome thanks! I wonder why those files could not be copied. Certainly something to look into. I'll put it on my todo list.