Fixed two issues with the implementations of the COPY and MOVE methods:
COPY no longer fails when a Depth isn't specified. (According to
RFC2518, the COPY method on a collection without a Depth header
MUST act as if a Depth header with value "infinity" was included.)
MOVE and COPY no longer fail when a file exists at the destination
path and Overwrite isn't set to false.
Fixed two issues with the implementations of the COPY and MOVE methods: