Do a full compile in 'cton-util wasm'.
Do a full compile in 'cton-util wasm'.

This removes the `optimize` option, as one can do that with
`--set`, eg. `--set opt_level=best`. And it adds an option to
print the compilation output.

And, it enables simple_gvn and licm for opt_level=best.

stoklund/cretonne,sunfishcode/cretonne,stoklund/cretonne,sunfishcode/cretonne,sunfishcode/cretonne,stoklund/cretonne