[DONE] /bi should accept coordinates, like /mark does

[Zafum]

I've recently started experimenting with projects that use only commands, where I don't have to move or anything; I just copy them all from a text file, making the project quick and easy to rebuild and transfer between servers, or for making a variety of random environments.

Since a majority of them are "/mark xx xx xx" commands, I'd love to have an easier way to find out the coordinates of a block. Right now I have to use an arbitrary command like /measure and place its first mark on the block whose coordinates I want to find out, but then have to /cancel or place a second mark. It'd be handy if the coordinate information could be added to /bi, or some other single marker command.

[LiamRayStanley]

i like this idea, seems like it would be very helpful for building scripts lol

[fragmer]

Done! Coming in 0.617

SVN reference:
r1548 /branch-0.70x/
r1549 /branch-0.60x/