Imports of rsrc command

PathSynopsis
flagPackage flag implements command-line flag parsing.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
github.com/akavel/rsrc/binutil
github.com/akavel/rsrc/coff
github.com/akavel/rsrc/internal
github.com/akavel/rsrc/rsrc
ioPackage io provides basic interfaces to I/O primitives.
osPackage os provides a platform-independent interface to operating system functionality.
regexpPackage regexp implements regular expression search.
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.