perl/ESLIF.xs: Cache localized MarpaX::ESLIF::Context::* SV's
perl/ESLIF.xs: Cache localized MarpaX::ESLIF::Context::* SV's

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