[Clas12_calcom] new challenge data sample (4a.7.3)

[Raffaella De Vita]

Dear All,
new samples of data using the latest gemc (4a.2.0) and reconstruction 
(4a.7.3) were produced over the weekend. Files are in
/volatile/clas12/devita/challenge/sample-4a.7.3_inbending
/volatile/clas12/devita/challenge/sample-4a.7.3_outbending

Best regards,
     Raffaella