pasteboard and drag behaviors

10.13: adde/pasteboard and drag behaviors:

. it can be confusing to have copy|move behaviours depend on

whether the places are on the same volume or not .

. mac and pc offer various behaviors that further complicate things .

. the mac should be allowing a cut operation for folders,

and both should be following a paste with a dialog

that shows you what it's about to do,

and then does it (or your changes) when you press enter .

. of course, none of this should be hardwired;

rather you can use a gui to do things any way you choose:

{ mac, pc, customize } .

. customize will have these options:

. when I drag folders, I mean a

{cut, copy, {cut, copy} on the volume change} .