gst1-rtsp-server: new package

gst1-rtsp-server: new package

Based on patch by Phil Edworthy:
http://lists.busybox.net/pipermail/buildroot/2010-June/035777.html

Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Peter Korsgaard <peter@korsgaard.com>
Reviewed-by: Rahul Bedarkar <rahul.bedarkar@imgtec.com>
Reviewed-by: Abhimanyu Vishwakarma <Abhimanyu.Vishwakarma@imgtec.com>
Signed-off-by: Piotr Nakraszewicz <piotr.nakraszewicz@imgtec.com>
Signed-off-by: Abhilash Tuse <Abhilash.Tuse@imgtec.com>
[Thomas: add host-pkgconf to the dependencies.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>