Imports of pprof command

PathSynopsis
cmd/internal/objfilePackage objfile implements portable access to OS-specific executable files.
cmd/pprof/internal/commands
cmd/pprof/internal/driver
cmd/pprof/internal/fetch
cmd/pprof/internal/plugin
cmd/pprof/internal/symbolizer
cmd/pprof/internal/symbolz
debug/dwarfPackage dwarf provides access to DWARF debugging information loaded from executable files, as defined in the DWARF 2.0 Standard at http://dwarfstd.org/doc/dwarf-2.0.0.pdf.
flagPackage flag implements command-line flag parsing.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
internal/pprof/profile
net/urlPackage url parses URLs and implements query escaping.
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.
syncPackage sync provides basic synchronization primitives such as mutual exclusion locks.