Very minor tweaks:
 - Remove (c) pseudosymbol.
 - Remove "All Rights Reserved."
 - Change "Google Inc." (no longer exists) to "Google LLC".

[git-generate]
echo '
,s/\(c\) //
,s/ All rights reserved.//
,s/Google Inc./Google LLC/
w
q
' | sam -d LICENSE

Change-Id: Icf1e124b083e2cfd5c804ccef7f563881d5f41d9
Reviewed-on: https://go-review.googlesource.com/c/mod/+/598578
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>

Add new tool directive to go.mod parser and functions
to add and drop them.

For golang/go#48429

Change-Id: I37667a69ded9d59ea248ec48ad35c87592103218
Reviewed-on: https://go-review.googlesource.com/c/mod/+/508355
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Sam Thanawalla <samthanawalla@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

Fixes golang/go#45130

Change-Id: I2dccba5e958911177f10a5104a182f86ff8378d9
Reviewed-on: https://go-review.googlesource.com/c/mod/+/303234
Reviewed-by: Michael Matloob <matloob@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: David Chase <drchase@google.com>

Change-Id: I4803bfe7da3b21fdfe503b9804015f0a5104a52e
Reviewed-on: https://go-review.googlesource.com/c/mod/+/601441
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>