tmva: bugfix config, remove raw Ds child trk χ².

Minimum of all three is already one of the input variables
tmva: rename base conf
tmva: bugfix (adhoc), confquery script

The first print is preceded by strange invisible characters.  This makes
the job script fail when I iterate over the output.  For now add a dummy
starting line.
tmva: minor check in job script
tmva: rename script flag
tmva: option to process matching classifiers
tmva: important config changes

Two classes of configs:
- fewer training variables (less* et al), and
- decorrelated input variables (deco* et al).

chitra_less* et al:
- radial flight distance of Bs and Ds
- bachelor IP χ² wrt PV

chitra_deco* et al:
- decorrelate all input variables
- decorrelate only variables with large correlations
  - min. of all Ds children track χ²
  - Bs & Ds radial flight distance
  - Ds IP χ²
  NOTE: that the Bs & Ds radial flight distance is expected to be
  heavily correlated (key feature of the event topology/kinematics).

Reverts:
- included previously excluded variables: Bs DIRA, and IP χ² wrt PV.