- provide methods to create fitters with all its tools which use customized pixel cluster
on track tools with configurable split cluster maps, and
- use these methods to create fitters for extended track collections, which require
different split cluster maps.

This fixes q223, which requires a special split cluster map for pixel tracks.

2016-01-25 Alex Alonso
	* Fix for TrkAmbiguityProcessor after latest changes.
	* Tagging as: InDetRecExample-03-01-05-05

2016-01-23 Alex Alonso
	* Add new config flags to use different various track fitter until one creates valid
	covariance matrices. See ATLASRECTS-3555
        * Migrate the Rel 20.7 changes for low Pt to rel 21. Requires
	TrkAmbiguityProcessor-01-00-14-02
	* Tagging as: InDetRecExample-03-01-05-04

2016-01-10 Goetz Gaycken
	* Reverted removal of cut level 13, but now cut level 13
	  will only activate calo seed TRT segment finding if the
	  calorimeter is available.
2016-12-16 Alex Alonso
	* OBO Alex Kastanas. Fix the configuration for Global Monitoring
	accordligy to new tag: InDetGlobalMonitoring-00-10-01
	* Tagging as InDetRecExample-03-01-04
	* Tagging as InDetRecExample-03-01-03
...
(Long ChangeLog diff - truncated)


Former-commit-id: e3a159c8