Included function from bundle script
Merge pull request #119 from ohickey/fixed_pull_request

Lattice-Boltzmann 3-point coupling and user choosable noise type.
Update NEWS
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writevtf now creates one atom record per atom type/charge combination, thus avoiding several recors for the same atome type.
Merge branch '3.2'

Conflicts:
	scripts/vtf.tcl
fixed problems with compatibility with Shan Chen and old CUDA (no printf or errexit)