perl/ESLIF.xs: do not convert to Math::BigFloat when this is +/-Infinity or NaN
perl/ESLIF.xs: do not convert to Math::BigFloat when this is +/-Infinity or NaN

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