Directory walking in godoc relies on ReadDir which returns the result
of os.Lstat.
Instead make the the OS VFS's ReadDir use os.Stat on symlinks before
returning.
Fixesgolang/go#15049
Change-Id: I34d17ca0027b0245f5ef434a000e5a3fe2af11cf
Reviewed-on: https://go-review.googlesource.com/45096
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
