src/marpaESLIF.c: undef default string representation is empty, \"null\" is reserved to json mode
src/marpaESLIF.c: undef default string representation is empty, \"null\" is reserved to json mode

jddurand/c-marpaESLIF,jddurand/c-marpaESLIF,jddurand/c-marpaESLIF,jddurand/c-marpaESLIF,jddurand/c-marpaESLIF