Data support for //distr
Another attempt
Added butcher brush.
There should have been the licence notice at the head of ButcherBrush, this is now corrected.
Restore usage of pre-Anvil chunks for snapshots.
Catch Exception when using converted maps with 128 blocks height
Merge Moo0's data flag for distr.
Additionally made it compatible with the new clipboard flag.
Also added data flag to //count.
    //count -d 35 will now only search for white wool.
    //count 35:5 will only search for green wool.
    //count 35 will work as normal.
    //count 35:-1 will also work.
Merge branch 'master' of git://github.com/korikisulda/worldedit