Imports of gofmt command

PathSynopsis
bytesPackage bytes implements functions for the manipulation of byte slices.
cmd/internal/diff
flagPackage flag implements command-line flag parsing.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
go/astPackage ast declares the types used to represent syntax trees for Go packages.
go/parserPackage parser implements a parser for Go source files.
go/printerPackage printer implements printing of AST nodes.
go/scannerPackage scanner implements a scanner for Go source text.
go/tokenPackage token defines constants representing the lexical tokens of the Go programming language and basic operations on tokens (printing, predicates).
ioPackage io provides basic interfaces to I/O primitives.
io/fsPackage fs defines basic interfaces to a file system.
osPackage os provides a platform-independent interface to operating system functionality.
path/filepathPackage filepath implements utility routines for manipulating filename paths in a way compatible with the target operating system-defined file paths.
reflectPackage reflect implements run-time reflection, allowing a program to manipulate objects with arbitrary types.
runtimePackage runtime contains operations that interact with Go's runtime system, such as functions to control goroutines.
runtime/pprofPackage pprof writes runtime profiling data in the format expected by the pprof visualization tool.
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.
unicodePackage unicode provides data and functions to test some properties of Unicode code points.
unicode/utf8Package utf8 implements functions and constants to support text encoded in UTF-8.