Possibility to use a different threshold according to the number of fake superstrips
The option --ss_missingHits states the number of allowed missing hits : if ss_missingHits is 1 and the pattern has 6 active (=non FS) layers the threshold will be 5.
--ss_threshold is still used as a mandatory minimum value : whatever the value of ss_missingHits and the number of FS in the pattern, the threshold will never be below ss_threshold
Use cuda standard directory in makefile