cmd/upspinfs: make symlinks work again
cmd/upspinfs: make symlinks work again

Change-Id: I62b0b82ac91cda1d07ed09e5fa3345f24855270f
Reviewed-on: https://upspin-review.googlesource.com/5140
Reviewed-by: Rob Pike <4dc7c9ec434ed06502767136789763ec11d2c4b7@google.com>
Reviewed-by: Andrew Gerrand <395a7d33bec8475c9b83b7d440f141bcbd994aa5@google.com>
Reviewed-by: Eduardo Pinheiro <55040cbb39ba395339ae7940d8da6cd97797a4a8@google.com>

upspin/upspin,upspin/upspin