Imports of scantest command

PathSynopsis
bytesPackage bytes implements functions for the manipulation of byte slices.
cloud.google.com/go/bigtablePackage bigtable is an API to Google Cloud Bigtable.
cloud.google.com/go/bigtable/internal/cbtconfig
cloud.google.com/go/bigtable/internal/stat
flagPackage flag implements command-line flag parsing.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
golang.org/x/net/contextPackage context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes.
logPackage log implements a simple logging package.
math/randPackage rand implements pseudo-random number generators suitable for tasks such as simulation, but it should not be used for security-sensitive work.
osPackage os provides a platform-independent interface to operating system functionality.
syncPackage sync provides basic synchronization primitives such as mutual exclusion locks.
sync/atomicPackage atomic provides low-level atomic memory primitives useful for implementing synchronization algorithms.
text/tabwriterPackage tabwriter implements a write filter (tabwriter.Writer) that translates tabbed columns in input into properly aligned text.
timePackage time provides functionality for measuring and displaying time.