- swiglal-common.i: C++ function templates swiglal_from
  and swiglal_as_val convert primitive C types to/from
  scripting language, and fall back to make a swig_type
  wrapper for any other type. e.g. structs. All C integer
  and floating-point types, and LAL/GSL complex types are
  considered primitive.
- LALAtomicDatatypes.h: exclude COMPLEX8/COMPLEX16 from
  interface, since they should be always converted to
  scripting language complex numbers.
- swiglal-octave.i: provide SWIG UTL conversion fragments for
  LAL/GSL complex types. octcomplex.swg is broken, so include
  a fixed copy here.
- swiglal-python.i: provide SWIG UTL conversion fragments for
  LAL/GSL complex types.
- Added tests of complex number conversions for Octave and Python
Original: e594e1660cff7c767a96066359b1e3d7195b28a2