tools: add import comments.

Change-Id: Idda6e64580432cb9a731e4ebf4005ee4ceb4202d
Reviewed-on: https://go-review.googlesource.com/1244
Reviewed-by: Andrew Gerrand <adg@golang.org>
diff --git a/refactor/eg/eg.go b/refactor/eg/eg.go
index 933078f..a107204 100644
--- a/refactor/eg/eg.go
+++ b/refactor/eg/eg.go
@@ -1,6 +1,6 @@
 // Package eg implements the example-based refactoring tool whose
 // command-line is defined in golang.org/x/tools/cmd/eg.
-package eg
+package eg // import "golang.org/x/tools/refactor/eg"
 
 import (
 	"bytes"
diff --git a/refactor/importgraph/graph.go b/refactor/importgraph/graph.go
index 777fee8..6f49fab 100644
--- a/refactor/importgraph/graph.go
+++ b/refactor/importgraph/graph.go
@@ -4,7 +4,7 @@
 
 // Package importgraph computes the forward and reverse import
 // dependency graphs for all packages in a Go workspace.
-package importgraph
+package importgraph // import "golang.org/x/tools/refactor/importgraph"
 
 import (
 	"go/build"
diff --git a/refactor/lexical/lexical.go b/refactor/lexical/lexical.go
index 31dfb0f..55ec391 100644
--- a/refactor/lexical/lexical.go
+++ b/refactor/lexical/lexical.go
@@ -9,7 +9,7 @@
 //
 // THIS INTERFACE IS EXPERIMENTAL AND MAY CHANGE OR BE REMOVED IN FUTURE.
 //
-package lexical
+package lexical // import "golang.org/x/tools/refactor/lexical"
 
 // OVERVIEW
 //
diff --git a/refactor/rename/rename.go b/refactor/rename/rename.go
index 3516a72..dabfbee 100644
--- a/refactor/rename/rename.go
+++ b/refactor/rename/rename.go
@@ -5,7 +5,7 @@
 // Package rename contains the implementation of the 'gorename' command
 // whose main function is in golang.org/x/tools/refactor/rename.
 // See that package for the command documentation.
-package rename
+package rename // import "golang.org/x/tools/refactor/rename"
 
 import (
 	"errors"
diff --git a/refactor/satisfy/find.go b/refactor/satisfy/find.go
index a54dc70..3972637 100644
--- a/refactor/satisfy/find.go
+++ b/refactor/satisfy/find.go
@@ -15,7 +15,7 @@
 // since it is computing it anyway, and it is robust for ill-typed
 // inputs, which this package is not.
 //
-package satisfy
+package satisfy // import "golang.org/x/tools/refactor/satisfy"
 
 // NOTES:
 //