File anabyteo.c: Add tests.
File bootstrap.c: Test with weights.
File convend.c: Add tests.
File dft2res.c: Test with PMOD format.
File dftavg.c: Test with PMOD format.
File dftinteg.c: Test with PMOD format.
File e63to7.c: Add tests.
File e7to63.c: Add tests.
File efixplnr.c: Add tests.
File esplit.c: Add tests (although used when testing other applications).
File fit_ppf.c: Test metabolite fraction models (currently too slow to test routinely).
File img2dft.c: Add tests for options.
File img2flat.c: Test other image formats than just ECAT.
File imgadd.c: Add tests.
File imgcalc.c: Test other image formats than ECAT.
File imgdecay.c: Test other image formats than just ECAT.
File imgdv.c: Some options are not yet tested.
File imgki.c: Some options are not yet tested.
File imgunit.c: Test other image formats than just ECAT, as far as they support units.