Fix sccp_device_setActiveChannel (references #199)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5296 43c1dc8c-776e-4df2-8ef1-6e829299be21
Only release channel->line during sccp_channel_destroy, not in sccp_channel_cleanup

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5297 43c1dc8c-776e-4df2-8ef1-6e829299be21
Revise sccp_refcount_refreplace (Non-Final) (references #199)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5298 43c1dc8c-776e-4df2-8ef1-6e829299be21
Revise1 sccp_refcount_refreplace (Non-Final) (references #199)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5299 43c1dc8c-776e-4df2-8ef1-6e829299be21
Revision2 of sccp_refcount_refreplace (Use inplace replacement) (references #199)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5300 43c1dc8c-776e-4df2-8ef1-6e829299be21