wtf?

continuation of 45acf09e4a

This happens when you don't test.

In fact, allow all commands that are compatible by the brush:
the ones that expect exactly pos1 to be set

fixes #187

Though right-click currently doesn't work due to an engine bug.

Can't be bothered to do the rest. This stuff should be
rewritten in a modular fashion anyway.

This matches the behaviour before introduction of the vmanip code.

Since the code has two arrays of the area before and after,
the copy order is totally irrelevant.
Of course, this doesn't apply to metadata and we still need
to do that backwards.

Currently no schematic format makes use of these, but that
may change so do some future proofing.

The underlying issue is the size detection worldedit.allocate does
and can't be fixed or worked around in a simple way.

This reverts commit a97cccd2a1.

These commits create compatibility with MT/MTG 5.0.0+.
However, these commits may/will break with the 0.4-series.

Thanks to entuland for the Rhotator facedir to matrix and matrix to facedir code, which helped creating the tables.

scale was replaced with stretch in 674d647