Adding name parsing to the eamSetfl case.

The default behavior for eamReadSetfl does not populate the name field of the EamPotential struct, which caused a buffer overflow when running with "mpirun -n 1 ./bin/CoMD-mpi -e -t setfl -p Cu01.eam.alloy"

The comments claim that the first three lines are comments, but the first line of Cu01.eam.alloy looks similar to that of Cu_u6.eam.