Add a warning if a callback already exists for a parameter.
Lock input parameters when the input is running.
Get rid of the input lock.
Only try to stop the inputs if they are not stopped already.
Prevent changing params of outputs when they are runing.
Don't forget to call the unregister functions of outputs.
Fix typo input->output.
Use the input_add_param() instead of registry_instance_add_param().
Provide the registry_param to param callbacks.
Use output_add_param() for the addons as well.
Add flag REGISTRY_PARAM_FLAG_PAUSE_PROCESSING.
Add analyzer_add_param().
Add proto_add_param().
Make the declaration of registry_instance_add_param() private.
Add datastore_add_param().
Use pom_mutex_init_type().
Add register parameter info.
Add interface list to the parameter.
Free parameter info on param cleanup.
Add template list parameter info.