rustc-ap-serialize 566.0.0

Automatically published version of the package `serialize` in the rust-lang/rust repository from commit 42dcd4b7c5fb7b61bc2f4c0842f66e5ad40057e4 The publishing script for this crate lives at: https://github.com/alexcrichton/rustc-auto-publish

Support code for encoding and decoding types.