misc/dist: include directories in distribution tar and zip files.
misc/dist: include directories in distribution tar and zip files.

Fixes issue 3458.

R=adg, dsymonds
CC=golang-dev
http://codereview.appspot.com/5969071

Committer: Andrew Gerrand <395a7d33bec8475c9b83b7d440f141bcbd994aa5@golang.org>

tv42/old-go,dsriram/golang,gnanderson/go,pombredanne/go-deleteme,pombredanne/go-deleteme,apparentlymart/golang,pombredanne/go-deleteme,pombredanne/go-deleteme,tv42/old-go,apparentlymart/golang,dsriram/golang,dsriram/golang,dsriram/golang,tv42/old-go,gnanderson/go,apparentlymart/golang,gnanderson/go,gnanderson/go,tv42/old-go,dsriram/golang,pombredanne/go-deleteme,dsriram/golang,dsriram/golang,gnanderson/go,apparentlymart/golang,gnanderson/go,apparentlymart/golang,tv42/old-go,tv42/old-go,pombredanne/go-deleteme,apparentlymart/golang,apparentlymart/golang,tv42/old-go,gnanderson/go,pombredanne/go-deleteme