Imports of package v2

PathSynopsis
errorsPackage errors implements functions to manipulate errors.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
github.com/coreos/etcd/errorerror package describes errors in etcd project.
github.com/coreos/etcd/third_party/github.com/coreos/go-etcd/etcd
github.com/coreos/etcd/third_party/github.com/gorilla/mux
net/httpPackage http provides HTTP client and server implementations.
pathPackage path implements utility routines for manipulating slash-separated paths.
sortPackage sort provides primitives for sorting slices and user-defined collections.
strconvPackage strconv implements conversions to and from string representations of basic data types.
timePackage time provides functionality for measuring and displaying time.