Go style converged on using a single space after periods (see CL 20022).
Fix a couple places here that weren't consistent.

Change-Id: I856a34ee8a24bd033525baca55afd869158dd9ff
Reviewed-on: https://go-review.googlesource.com/c/image/+/469195
Reviewed-by: Dmitri Shuralyov <[email protected]>
Auto-Submit: Dmitri Shuralyov <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>
Run-TryBot: Dmitri Shuralyov <[email protected]>
Reviewed-by: Michael Knyszek <[email protected]>

Previously only NameIDCopyright had NameID type,
the rest were untyped integer constants.

Change-Id: I714308b4eea78ebc65c2f7a10f7316c17cfd403c
Reviewed-on: https://go-review.googlesource.com/c/image/+/468938
Reviewed-by: Dmitri Shuralyov <[email protected]>
Auto-Submit: Dmitri Shuralyov <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>
Run-TryBot: Dmitri Shuralyov <[email protected]>
Reviewed-by: Michael Knyszek <[email protected]>

Update golang.org/x dependencies to their latest tagged versions.
Once this CL is submitted, and post-submit testing succeeds on all
first-class ports across all supported Go versions, this repository
will be tagged with its next minor version.

Change-Id: I4b93f43a856da6cae7427a722a379231614f6683
Reviewed-on: https://go-review.googlesource.com/c/image/+/473436
Auto-Submit: Gopher Robot <[email protected]>
Reviewed-by: Dmitri Shuralyov <[email protected]>
Reviewed-by: Dmitri Shuralyov <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>
Run-TryBot: Gopher Robot <[email protected]>
Reviewed-by: Heschi Kreinick <[email protected]>