src/marpaESLIFLua.c: use marpaESLIFLua_lua_touserdata() wrapper, force UTF-8 when injecting strings, leak fix in lexemeReadi [ci skip]
src/marpaESLIFLua.c: use marpaESLIFLua_lua_touserdata() wrapper, force UTF-8 when injecting strings, leak fix in lexemeReadi [ci skip]

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