Revert "alien.data: <ref> doesn't need to zero memory."

This reverts commit f9a714b48fc1700431b61f7f1968893d2b2b3ee7.
Revert "io.encodings: string>byte-array-fast can use (byte-array)."

This reverts commit f9881290cdb3238365f0bc5d126325236b4c2123.