libgo: update to Go1.16beta1 release

This does not yet include support for the //go:embed directive added
in this release.

	* Makefile.am (check-runtime): Don't create check-runtime-dir.
	(mostlyclean-local): Don't remove check-runtime-dir.
	(check-go-tool, check-vet): Copy in go.mod and modules.txt.
	(check-cgo-test, check-carchive-test): Add go.mod file.
	* Makefile.in: Regenerate.

Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/280172

1 files changed, 7 insertions, 6 deletions

diff --git a/libgo/go/time/tick.go b/libgo/go/time/tick.go
index 152d5a7..81d2a43 100644
--- a/libgo/go/time/tick.go
+++ b/libgo/go/time/tick.go
@@ -6,18 +6,19 @@ package time
 
 import "errors"
 
-// A Ticker holds a channel that delivers `ticks' of a clock
+// A Ticker holds a channel that delivers ``ticks'' of a clock
 // at intervals.
 type Ticker struct {
 	C <-chan Time // The channel on which the ticks are delivered.
 	r runtimeTimer
 }
 
-// NewTicker returns a new Ticker containing a channel that will send the
-// time with a period specified by the duration argument.
-// It adjusts the intervals or drops ticks to make up for slow receivers.
-// The duration d must be greater than zero; if not, NewTicker will panic.
-// Stop the ticker to release associated resources.
+// NewTicker returns a new Ticker containing a channel that will send
+// the time on the channel after each tick. The period of the ticks is
+// specified by the duration argument. The ticker will adjust the time
+// interval or drop ticks to make up for slow receivers.
+// The duration d must be greater than zero; if not, NewTicker will
+// panic. Stop the ticker to release associated resources.
 func NewTicker(d Duration) *Ticker {
 	if d <= 0 {
 		panic(errors.New("non-positive interval for NewTicker"))