- with the increase of use of the swig wrapping of this type, we are
  encountering problems with incompatibilities between the C structure
  definitions and the contents of XML tables
- for these types to be compatible with the I/O code in glue, pylal (and
  anything that's been written using that code over the past years), some
  tweaking of GPS time attributes is needed.  generally existing Python
  code expects these table row types to have attributes that match the
  column names found in XML tables, which means, for example, that
  sngl_inspiral table row objects are expected to have .end_time and
  .end_time_ns attributes (both containing integers).  for convenience, the
  row types in glue have had properties added to combine these pairs of
  integers into LIGOTimeGPS objects.
- this patch makes the adjustments to the SnglInspiralTable type needed for
  the end time to be exported compatibly with the types in glue and pylal.
  the C structure's .end_time element is renamed to .end, and the swig
  wrapping is taught how to emulate the .end_time and .end_time_ns
  attributes of existing Python code.
- note that the .event_id and .process_id elements of the C structure still
  require work before a swig-wrapped SnglInspiralTable row object can be
  used directly with the glue.ligolw I/O library.
- refs #2294
Original: 8fb00f425198665d9f592f068c55282c2393ad70