Imports of package walpb

PathSynopsis
encoding/jsonPackage json implements encoding and decoding of JSON as defined in RFC 7159.
errorsPackage errors implements functions to manipulate errors.
github.com/coreos/etcd/Godeps/_workspace/src/code.google.com/p/gogoprotobuf/proto
ioPackage io provides basic interfaces to I/O primitives.
mathPackage math provides basic constants and mathematical functions.