Fix for ClassNotFoundException  for GingerbreadOpenCameraInterface

com.google.zxing.client.android.camera.open.GingerbreadOpenCameraInterface
            at java.lang.Class.classForName(Native Method)
            at java.lang.Class.forName(Class.java:234)
            at java.lang.Class.forName(Class.java:181)
            at com.google.zxing.client.androidlegacy.common.PlatformSupportManager.build(PlatformSupportManager.java:74)
            at com.google.zxing.client.androidlegacy.camera.CameraManager.openDriver(CameraManager.java:78)
            at com.google.zxing.client.androidlegacy.CaptureActivity.initCamera(CaptureActivity.java:521)
            at com.google.zxing.client.androidlegacy.CaptureActivity.surfaceCreated(CaptureActivity.java:361)