src/marpaESLIF.c: make sure a rule with an exception have exactly one RHS before the "-" sign
src/marpaESLIF.c: make sure a rule with an exception have exactly one RHS before the "-" sign

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