Imports of package libtar2vhd

PathSynopsis
github.com/Microsoft/opengcs/service/gcsutils/fs
github.com/Microsoft/opengcs/service/gcsutils/tarlib
github.com/Microsoft/opengcs/service/gcsutils/vhd
github.com/docker/docker/pkg/archivePackage archive provides helper functions for dealing with archive files.
github.com/sirupsen/logrusPackage logrus is a structured logger for Go, completely API compatible with the standard library logger.
ioPackage io provides basic interfaces to I/O primitives.
io/ioutilPackage ioutil implements some I/O utility functions.
osPackage os provides a platform-independent interface to operating system functionality.
os/execPackage exec runs external commands.
path/filepathPackage filepath implements utility routines for manipulating filename paths in a way compatible with the target operating system-defined file paths.