fa035fe2d61d0c98d1bfd0153a0c3b5eb9d40de4 Remove unused CDataStream::SetType (MarcoFalke)
fa29e73cdab82f98682821322cda89b1084ba887 Use DataStream where possible (MarcoFalke)
fa9becfe1cea5040e7cea36324d1b0789cbbd25d streams: Add DataStream without ser-type and ser-version (MarcoFalke)
Pull request description:
This was done in the context of https://github.com/bitcoin/bitcoin/pull/25284 , but I think it also makes sense standalone.
The basic idea is that serialization type should not be initialized when it is not needed. Same for the serialization version.
So do this here for `DataStream`. `CDataStream` remains in places where it is not yet possible.
ACKs for top commit:
stickies-v:
re-ACK [fa035fe](fa035fe2d6)
aureleoules:
diff re-ACK fa035fe2d61d0c98d1bfd0153a0c3b5eb9d40de4 fa0e6640ba..fa035fe2d6
Tree-SHA512: cb5e53d0df7c94319ffadc6ea1d887fc38516decaf43f0673396d79cc62d450a1a61173654a91b8c2b52d2cecea53fe4a500b8f6466596f35731471163fb051c