Set Boost min. version to 1.46 and remove file versioning

- Adding 1.46 as minimum libboost version to be compatible with
  Ubuntu 12.04
- Removing file versioning to avoid symlink errors with vagrant
Add libtbb to bootstrap-dev-environment script and fixing small error

- Libphidgets needs to be unpacked with xvf, since it doesn't seem to
  be a gzipped tar archive
Fix OpenCV findcontours error in voxelcarving.cpp

- Mask.clone() doesn't seem to work with either Ubuntu 12.04 or gcc