Imports of package version

PathSynopsis
github.com/coreos/etcd/pkg/fileutilPackage fileutil implements utility functions related to files and paths.
github.com/coreos/etcd/pkg/typesPackage types declares various data types and implements type-checking functions.
osPackage os provides a platform-independent interface to operating system functionality.
pathPackage path implements utility routines for manipulating slash-separated paths.