WAComboResponse doesn't work with socket streams

[theseion]

WAComboResponse and WAStremedResponse write to a socket stream directly. ZdcSocketStream (Zinc) does not implement #crlf and stream nextPut: Character space fails because Characters can no longer be stored into a byte array (#nextPutAll: works because of the implicit conversion done by the VM in the primitive).

[theseion]

These issues would be taken care of by https://github.com/SeasideSt/Grease/pull/138, which simply introduces two extensions. But see discussion in #1159. This might not be the best solution.