We go very explicit here and assume that all Luerl functions require
their arugments to be explicitly encoded and return values
decoded. This is still a test version.

Also commented out some test output.

So luerl_new has now become the luerl. For backwards compatibility
save the old luerl unchanged as luerl_old. The documentation and test
suites have updated as well. A major change in luerl is the
encoding/decoding of functions which are assumed to use encoded
arguments and return values.

These just call the erlang module functions moving the state to the
first argument.

Fix tests on develop-encode