fixed incompatiblity with dual antlr libs in classpath
fixed incompatiblity with dual antlr libs in classpath

andrenmaia/batfish,arifogel/batfish,batfish/batfish,intentionet/batfish,dhalperi/batfish,arifogel/batfish,intentionet/batfish,batfish/batfish,dhalperi/batfish,intentionet/batfish,intentionet/batfish,dhalperi/batfish,batfish/batfish,intentionet/batfish,arifogel/batfish,andrenmaia/batfish