Changeset 2317 for trunk/LMDZ.MARS/util

Mars GCM:
Creation of the utilitary program aeroptical.F90, whose goal is to compute the opacities [1/km]
of dust and water ice aerosols, from their mass mixing ratios and their effective radius
stored in a GCM file, all at a wavelength given by the user. To that end, it reads optical
properties stored in files of the datadir/ directory.
+ associated aeroptical.def

AB