Reversed Lathe mode direction feature request

[iApple5s]

Request to add an option for the Lathe operation that will cut towards the origin, instead of away from the origin. This will allow parts to be cut from an unsupported end towards the chuck, maintaining maximum rigidity by having the support of uncut material. Cut jobs can also manufacture multiple parts and part them off, without having to worry about suppporting the stock for the following parts.