WORLDEDIT-3201 - Reported by luacs1998

In reference to http://youtrack.sk89q.com/issue/WORLDEDIT-3047 .

WorldEdit Forge does not support any way of checking permissions, besides what is already specified in ForgeUtil.

For implementing FE permission support, from what I see I will have to make my own implementation of ForgePlayer, and I'm not sure how a partial platform would work.

Hence, I am requesting that WEPIF be abstracted out to become a part of WorldEdit's core library, with special cases for Bukkit and Forge.