crypto: add import comments.

Change-Id: I33240faf1b8620d0cd600de661928d8e422ebdbc
Reviewed-on: https://go-review.googlesource.com/1235
Reviewed-by: Andrew Gerrand <adg@golang.org>
diff --git a/ssh/agent/client.go b/ssh/agent/client.go
index 7f2ae50..1a91696 100644
--- a/ssh/agent/client.go
+++ b/ssh/agent/client.go
@@ -8,7 +8,7 @@
 References:
   [PROTOCOL.agent]:    http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/PROTOCOL.agent
 */
-package agent
+package agent // import "golang.org/x/crypto/ssh/agent"
 
 import (
 	"bytes"
diff --git a/ssh/doc.go b/ssh/doc.go
index d4d16f0..fb6402b 100644
--- a/ssh/doc.go
+++ b/ssh/doc.go
@@ -15,4 +15,4 @@
   [PROTOCOL.certkeys]: http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/PROTOCOL.certkeys
   [SSH-PARAMETERS]:    http://www.iana.org/assignments/ssh-parameters/ssh-parameters.xml#ssh-parameters-1
 */
-package ssh
+package ssh // import "golang.org/x/crypto/ssh"
diff --git a/ssh/terminal/util.go b/ssh/terminal/util.go
index 0763c9a..598e3df 100644
--- a/ssh/terminal/util.go
+++ b/ssh/terminal/util.go
@@ -14,7 +14,7 @@
 // 	        panic(err)
 // 	}
 // 	defer terminal.Restore(0, oldState)
-package terminal
+package terminal // import "golang.org/x/crypto/ssh/terminal"
 
 import (
 	"io"
diff --git a/ssh/test/doc.go b/ssh/test/doc.go
index 787b8fa..d21d6b7 100644
--- a/ssh/test/doc.go
+++ b/ssh/test/doc.go
@@ -4,4 +4,4 @@
 
 // This package contains integration tests for the
 // code.google.com/p/go.crypto/ssh package.
-package test
+package test // import "golang.org/x/crypto/ssh/test"
diff --git a/ssh/testdata/doc.go b/ssh/testdata/doc.go
index 4302486..3f4d74d 100644
--- a/ssh/testdata/doc.go
+++ b/ssh/testdata/doc.go
@@ -5,4 +5,4 @@
 // This package contains test data shared between the various subpackages of
 // the code.google.com/p/go.crypto/ssh package. Under no circumstance should
 // this data be used for production code.
-package testdata
+package testdata // import "golang.org/x/crypto/ssh/testdata"