All:

All:
- Speed up the computation/selection of primary track candidates (by up to a factor 100)
- Improve computation of initial covariance matrices for Kalman
- Use specific covariance matrices when there is no magnetic field
- fix potential bug by reordering cluster/track selection
- fix selection of track candidates when there is no magnetic field
- new protection against tracking divergences (see below)

AliMUONRecoParam:
- change Cosmic settings
- New parameter: maximum number of trigger tracks above which the tracking is cancelled
- New parameter: maximum number of track candidates above which the tracking abort

(Philippe Pillot)