client/gobind: update to new DirEntry
client/gobind: update to new DirEntry

Tested on Android.

Change-Id: Ifc0ad87695de725243df4ca5aabf60dc965c196d
Reviewed-on: https://upspin-review.googlesource.com/2761
Reviewed-by: Rob Pike <4dc7c9ec434ed06502767136789763ec11d2c4b7@google.com>

upspin/upspin,upspin/upspin