update manifests

libuvc/manifest.xml

 <package>
-  <description brief="libuvc">
+  <description brief="low-level driver for USB video cameras">
 
-     Device driver library for USB Video Class devices.
+     This package pulls in the libuvc library for USB Video Class devices.
 
   </description>
   <author>Ken Tossell</author>

libuvc_camera/manifest.xml

 <package>
-  <description brief="libuvc_camera">
-
-     ROS camera driver using libusb
-
+  <description brief="driver for USB video cameras">
+    This is a ROS driver for USB video cameras (webcams)
+    and other media input devices that support the USB Video Class
+    specification.
   </description>
-  <author></author>
+  <author>Ken Tossell</author>
   <license>BSD</license>
   <review status="unreviewed" notes=""/>
   <url>http://ros.org/wiki/libuvc_camera</url>

stack.xml

 <stack>
-  <description brief="libuvc_ros">libuvc in ROS</description>
+  <description brief="driver for USB cameras">
+    This stack contains a driver for USB video cameras
+    that implement the USB Video Class specification.
+  </description>
   <author>Maintained by Ken Tossell</author>
-  <license></license>  
+  <license>BSD</license>  
   <review status="unreviewed" notes=""/>
   <url>http://ros.org/wiki/libuvc_ros</url>
+  <depend stack="common_msgs" /> <!-- sensor_msgs -->
+  <depend stack="driver_common" /> <!-- dynamic_reconfigure, driver_base -->
+  <depend stack="image_common" /> <!-- camera_info_manager, image_transport -->
   <depend stack="ros" />
+  <depend stack="ros_comm" /> <!-- roscpp -->
 
 </stack>