modify warson comp.cfg to call warson.cmake configuration file

cfg/warson/comp.cfg

-self.pars['CMAKELIST'].val='blueberry.cmake'
+self.pars['CMAKELIST'].val='warson.cmake'
 self.pars['NB_TASKS'].val='32'
 self.pars['NB_THREADS'].val='1'
 self.pars['RUNMETHOD'].vals=['interactive','at','batch',]