Update backuptool.sh for new Gtalk app and lib

The new Gtalk app with video and voice chat from the Nexus S
OTA update is currently not backed up by the script because
Google renamed it Talk2.apk and added a new lib for it.

Change-Id: I2b0245d561584fa4d84e7d424653543d723a1ac6
diff --git a/prebuilt/common/bin/backuptool.sh b/prebuilt/common/bin/backuptool.sh
index 3953b5e..dc4590a 100755
--- a/prebuilt/common/bin/backuptool.sh
+++ b/prebuilt/common/bin/backuptool.sh
@@ -59,6 +59,7 @@
 app/soundback.apk
 app/Street.apk
 app/Talk.apk
+app/Talk2.apk
 app/talkback.apk
 app/Twitter.apk
 app/Vending.apk
@@ -68,6 +69,7 @@
 etc/permissions/features.xml
 framework/com.google.android.maps.jar
 lib/libspeech.so
+lib/libtalk_jni.so
 lib/libvoicesearch.so
 etc/hosts
 etc/custom_backup_list.txt