[Monotone-devel] Rename is not Move

[J Decker]

I'm trying to rename a directory 'libpng-1.2.31' to 'libpng-1.2.40'
but when I do

mtn rename libpng-1.2.31 libpng-1.2.40

it tells me that destination libpng-1.2.40 is not a directory.