An old update for API changes in reflect package left several
helper variables that do not have a meaning anymore, and
the type checking of arrays vs slices was broken.
Fixes#2513.
R=ultrotter, rsc
CC=golang-dev, remy
https://golang.org/cl/5488094
This is Go 1 package renaming CL #1.
This one merely moves the source; the import strings will be
changed after the next weekly release.
The only edits are in Makefiles.
R=r, rsc
CC=golang-dev
https://golang.org/cl/5331060