Fix: Rework indicate dialing so that Placed Calls information is updated correctly. SendCallState has to happen after sendDialedNumber & sendCallInfo. Split the function in two helper parts to reduce the number of earlyrtp checks. sccp_device_indicate_dialing should be removed completely later on. (Issue reported by Steve Storts)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5671 43c1dc8c-776e-4df2-8ef1-6e829299be21