Fixed 1.8 world item format reading.
Merge pull request #1575 from mc-server/1.8-Item

Fixed 1.8 world item format reading.
QtBiomeVisualiser: Generator uses all machine threads.

The previous limit of 1 thread was lifted, now the generator source runs on all CPU threads available.
Merge pull request #1576 from mc-server/QtBiomeVisualiserThreadedGen

QtBiomeVisualiser: Generator uses all machine threads.
Merge remote-tracking branch 'origin/master' into GrownBiomes
QtBiomeVisualiser: Added a prototyping int generator flavor.

This generator is easier to manipulate, since it doesn't require rewriting the sizes in the template parameters. On the other hand, it doesn't optimize so well, so it's a bit slower.