change rooms names from 3_xxx to r3_xxx
change rooms names from 3_xxx to r3_xxx

pato/bwi_experimental,pato/bwi_experimental,utexas-bwi/bwi_experimental,utexas-bwi/bwi_experimental,utexas-bwi/bwi_experimental,Musi13/bwi_experimental,pato/bwi_experimental,Musi13/bwi_experimental,utexas-bwi/bwi_experimental,pato/bwi_experimental,Musi13/bwi_experimental,Musi13/bwi_experimental,pato/bwi_experimental,utexas-bwi/bwi_experimental,Musi13/bwi_experimental,pato/bwi_experimental,Musi13/bwi_experimental,utexas-bwi/bwi_experimental