Adapted conference Audio Patch (by Marcello) for all asterisk versions

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4373 43c1dc8c-776e-4df2-8ef1-6e829299be21
Reindented ast_jb_conf in chan_sccp.c. Adding ss-switch option for SCCP_SS_GETCONFERENCEROOM

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4374 43c1dc8c-776e-4df2-8ef1-6e829299be21
Update indicattion handling for ConnectedConference

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4375 43c1dc8c-776e-4df2-8ef1-6e829299be21
Handle ConnectedConference Correctly while processing sccp_channel_hold

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4376 43c1dc8c-776e-4df2-8ef1-6e829299be21
Handle ConnectedConference during openreceiveack

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4377 43c1dc8c-776e-4df2-8ef1-6e829299be21
Start new conference via ss-switch methodology

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4378 43c1dc8c-776e-4df2-8ef1-6e829299be21