PR11877 backport https://github.com/bitcoin/bitcoin/pull/11877/files
- for "vout must be a number" ABC error message
- remove stuff related to RBF
88af502 test: Add createrawtransaction functional tests (João Barbosa)
27c6199 test: Add multidict to support dictionary with duplicate key (laanwj) (João Barbosa)
320669a rpc: Validate replaceable type in createrawtransaction (João Barbosa)
Pull request description:
This was motivated by the `Invalid parameter, duplicated address` test. Credit to @laanwj for `multidict` implementation.