Exploding Engines should kill themselves

Added because someone decided turning off explosions was a good idea.
Fix facade rotation. It works again with new meta system.
Merge branch 'master' into power
Merge branch 'power'
First draft 1.6. Lots still to do. :(
Merge Power into mc16
Update build.xml
More update work
More update work

Fluids are mostly converted, including rendering and registration. Added
Fuel Block.
Tweak Pipe Fluid renderer
Rename pipes appropriately
Merge mc16 into Builder