rustc-ap-serialize 296.0.0

Automatically published version of the package `serialize` in the rust-lang/rust repository from commit 126a0e2aadcd2c4cbe0b67f9c192047d6f6ec9e6 The publishing script for this crate lives at: https://github.com/alexcrichton/rustc-auto-publish

Support code for encoding and decoding types.