Added codes to allow modifying Xi2max value in preinclude
Modified TrigFastTrackFinder_Config.py and ConfigSettingBase.py to allow change of Xi2max value in preinclude file, similar to the way of changing pTmin.
Modified TrigFastTrackFinder_Config.py and ConfigSettingBase.py to allow change of Xi2max value in preinclude file, similar to the way of changing pTmin.