all: add import comments

Change-Id: Ife10a16774dd6fe5d782fd893341efb262d0a22a
Reviewed-on: https://go-review.googlesource.com/c/141457
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
diff --git a/golint/golint.go b/golint/golint.go
index ac024b6..d53bce3 100644
--- a/golint/golint.go
+++ b/golint/golint.go
@@ -5,7 +5,7 @@
 // https://developers.google.com/open-source/licenses/bsd.
 
 // golint lints the Go source files named on its command line.
-package main
+package main // import "golang.org/x/lint/golint"
 
 import (
 	"flag"
diff --git a/lint.go b/lint.go
index 46bd45f..915fbcb 100644
--- a/lint.go
+++ b/lint.go
@@ -5,7 +5,7 @@
 // https://developers.google.com/open-source/licenses/bsd.
 
 // Package lint contains a linter for Go source code.
-package lint
+package lint // import "golang.org/x/lint"
 
 import (
 	"bufio"