Prevent UserToDevice messages larger than 2048 being to old protocol devices (which would cause a buffer overflow and a subsequent full reset of the device (Reported by Alena Juk))

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4577 43c1dc8c-776e-4df2-8ef1-6e829299be21
Reduced the ConfList Message size, to cram in as much information as possible

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4578 43c1dc8c-776e-4df2-8ef1-6e829299be21