crypto: add import comments.

Change-Id: I33240faf1b8620d0cd600de661928d8e422ebdbc
Reviewed-on: https://go-review.googlesource.com/1235
Reviewed-by: Andrew Gerrand <adg@golang.org>

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"

ssh/doc.go

@@ -15,4 +15,4 @@ References:
   [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"

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"

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"

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"