Make function names more consistent:
* ``dds_topic_{get,set}_filter`` -> ``dds_{get,set}_topic_filter``
* ``dds_{get,set}_enabled_status`` -> ``dds_{get,set}_status_mask``
* ``dds_instance_lookup`` -> ``dds_lookup_instance``
Plus removal of defunct ddsv2.h.
The main naming scheme is OPER_TYPE (i.e., dds_create_participant) but the QoS operations were named TYPE_OPER (i.e., dds_qos_create). This commit brings the QoS scheme in line with the rest, retaining the old names as a deprecated interface.
Signed-off-by: Erik Boasson <eb@ilities.com>
