Proto commits in capnproto/pycapnp

These 3 commits are when the Protocol Buffers files have changed:

Commit:e389772
Author:Ivor Blockley

Update benchmark *.proto definitions to specify proto2 syntax, and add a missing field in addressbook.proto

The documentation is generated from this commit.

Commit:52dde9a
Author:Jason Paryani

Add benchmarks

Commit:c44b5b3
Author:Jason Paryani

adding benchmarks