rustc-ap-rustc_serialize 727.0.0

Automatically published version of the package `rustc_serialize` in the rust-lang/rust repository from commit 9a27044f42ace9eb652781b53f598e25d4e7e918 The publishing script for this crate lives at: https://github.com/alexcrichton/rustc-auto-publish
rustc-ap-rustc_serialize-727.0.0 doesn't have any documentation.
Support code for encoding and decoding types.