go.talks: fix Advanced Concurrency Patterns imports

Doesn't fix the build, but at least makes the programs correct.

R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/9517047
diff --git a/2013/advconc/dedupermain.go b/2013/advconc/dedupermain.go
index 898c175..d613f93 100644
--- a/2013/advconc/dedupermain.go
+++ b/2013/advconc/dedupermain.go
@@ -5,7 +5,7 @@
 	"math/rand"
 	"time"
 
-	. "code.google.com/p/go.talks/2013/reader"
+	. "code.google.com/p/go.talks/2013/advconc/reader"
 )
 
 func init() {
diff --git a/2013/advconc/fakemain.go b/2013/advconc/fakemain.go
index bb1d44f..5c2d08c 100644
--- a/2013/advconc/fakemain.go
+++ b/2013/advconc/fakemain.go
@@ -5,7 +5,7 @@
 	"math/rand"
 	"time"
 
-	. "code.google.com/p/go.talks/2013/reader"
+	. "code.google.com/p/go.talks/2013/advconc/reader"
 )
 
 func init() {
diff --git a/2013/advconc/fakemainnomerge.go b/2013/advconc/fakemainnomerge.go
index c5bca2a..8ab960d 100644
--- a/2013/advconc/fakemainnomerge.go
+++ b/2013/advconc/fakemainnomerge.go
@@ -5,7 +5,7 @@
 	"math/rand"
 	"time"
 
-	. "code.google.com/p/go.talks/2013/reader"
+	. "code.google.com/p/go.talks/2013/advconc/reader"
 )
 
 func init() {
diff --git a/2013/advconc/naivemain.go b/2013/advconc/naivemain.go
index 072608f..a5a5155 100644
--- a/2013/advconc/naivemain.go
+++ b/2013/advconc/naivemain.go
@@ -5,7 +5,7 @@
 	"math/rand"
 	"time"
 
-	. "code.google.com/p/go.talks/2013/reader"
+	. "code.google.com/p/go.talks/2013/advconc/reader"
 )
 
 func NaiveSubscribe(fetcher Fetcher) Subscription {
diff --git a/2013/advconc/naivemainnomerge.go b/2013/advconc/naivemainnomerge.go
index 9564160..f4a94ad 100644
--- a/2013/advconc/naivemainnomerge.go
+++ b/2013/advconc/naivemainnomerge.go
@@ -5,7 +5,7 @@
 	"math/rand"
 	"time"
 
-	. "code.google.com/p/go.talks/2013/reader"
+	. "code.google.com/p/go.talks/2013/advconc/reader"
 )
 
 func init() {