PRO: REE_SET_GSM, sc PURPOSE: LOADS STATE AD SETS UP PLOTS FOR GSM INPUT: SC - REQUIRED. STRING. Spacecraft EXAMPLE: ree_set_gsm, 'a' OUTPUT: GSM Coordinates are laoded into tplot. WARNING: BE SURE TO SET TIMESPAN FIRST! INITIAL VERSION: REE 08-10-31 MODIFICATION HISTORY: LASP, CU