I commit several small changes, which are necessary for the PeerBox move
functionality to work with H2H. In the PeerBox application, the move
operation of a file is performed by a user, e.g. by using drag-and-drop
or cut/paste interactions. 

As the H2H library performs the move by itself, PeerBox cannot use it
directly. The checks if the source file exists throws an exception,
because the user already moved (and thus, deleted) the file at the
source path. Therefore, neither throwing exceptions nor performing a
code-initiated move is a desired behaviour for PeerBox. Hence, I changed
this parts:

H2HFileManager.move()
MoveOnDiskStep.verifyFiles()
MoveOnDiskStep.doExecute()
For easy reverting in case of incompatibilities, the few lines are left
there as comments.

Cheers, Claudio