Added NR functionality to XLALInspiralTDWaveformFromSimInspiral(), needed for gstlal
GstLAL uses the function XLALInspiralTDWaveformFromSimInspiral(). Currently it does not support NR_hdf5 waveforms because the NR data filepath is not passed to subsequent functions. This fix passes the filepath to XLALSimInspiralTD().