readlineinfo.c: Adapted to read TLIv5.0; removed ASCII-reading code;
removed notyet, readtli_ascii, getinifinasctli, getisoratio,
invalidfield.
structures_tr.h: Added molname to prop_db structure.
transit.h: Updated compatible version to 5.
opacity.c: Fixed bug in valueinarray call to make molID.
makesample.c: Removed cross-section interpolation.