fix some issues with the documentation
add Doxygen related output to gitignore
add script to generate large configuration files
use larger ao2_container buckets
remove comment on slowness

After some tests, it is a bit slow but it is not catastrophically slow.
remove sccp_device_on_progress and sccp_session_progress functions

Not used currently.
remove check for null in sccp_msg_callinfo
remove define for SCCP_DESERIALIZER_ERROR
move struct sccp_deserializer into sccp_msg file
queue a noop message in sccp_session_stop

Previously, a stop message was queued, but it doing nothing useful, so
replace it with a noop message.
add a sccp_cfg_find_device_or_guest function

Replace usage of similar function in sccp_session.
remove comment around sccp_session_stop
remove bindaddr general option

Always bind to INADDR_ANY for now.