presence_privacy--FS

I attached the presence privacy patch I use locally. It adds two new XML tags, as follows:

vars.xml:
<X-PRE-PROCESS cmd="set" data="presence_privacy=true"/>

sip_profiles/internal.xml:
<param name="presence-privacy" value="$${presence_privacy}"/>

If presence_privacy is set to true, then FS will set the presence NOTIFY dm:note value to "On The Phone" during an active call. If presence_privacy is set to false, then FS will set th presence NOTIFY dm:note value to "Talk xxx", where xxx is the number that the user is talking to on an active call.

http://jira.freeswitch.org/browse/FS-849