Fix: refcount issue during HOLD/RESUME when using line button

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5791 43c1dc8c-776e-4df2-8ef1-6e829299be21
Enhancement: prevent refcount issue during HOLD/RESUME when using line button

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5792 43c1dc8c-776e-4df2-8ef1-6e829299be21
Assign device to newly created channel when dealing with a non shared line, which prevent NONE codec issue

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5793 43c1dc8c-776e-4df2-8ef1-6e829299be21
Fix: Only set wideband codec during channel_request when using SharedLine and not audiocapabilities have been set

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5794 43c1dc8c-776e-4df2-8ef1-6e829299be21
Enhancement: Deal with video codec requesting the same way as with requested audio codecs

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5795 43c1dc8c-776e-4df2-8ef1-6e829299be21
Enhancement: Deal with video codec requesting the same way as with requested audio codecs (2)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5796 43c1dc8c-776e-4df2-8ef1-6e829299be21