Camino tracking interfaces update

[mick-d]

Camino tracking interfaces has been updated so that to include:

• new deterministic tracking from bedpostx output: TrackBedpostxDeter
• new probabilistic tracking from bedpostx output: TrackBedpostxProba
• add tracking options previously not implemented in NyPipe: tracker, interpolator, stepsize, curveinterval

Important note: input_file is not mandatory anymore for tracking, as for bedpostx input only bedpostxdir is required. As a result, the output name to be generated was set to bedpostx_tracked, instead of based on input_file, when bedpostx data are used as input (since input_file is undefined in this case).

[satra]

thanks @mick-d - could you please merge with master and redo make check-before-commit.

also could you please update the CHANGES file.

[mick-d]

Hi Satra, I did again a merge with master and a make check-before-commit but it did not result in any changes. I updated the CHANGES file.