removed LMD_LES_MARS_install save_LES_MARS correcfft now useless
adding links to interfaces in WRFV3 folder
moved module_model_constants to INTERFACES since it is common to WRFV2 and WRFV3.
removed module_model_constants in WRFV3 since it is about to be overwritten by a link to INTERFACES
linked module_model_constants in WRFV2/share and WRFV3/share to the common file in INTERFACES. had to do this after previous commit in a separate way to keep history.
module_init_utilities is linked from WRFV3 to WRFV2 version because we added another interpolation option
removed modif_mars
changed linking to interfaces. symbolic links for routines are in WRFV3/phys and point towards a symbolic link dynphy_wrf_CURRENT in INTERFACES that simply needs to be changed to the correct planetary environment.
added gitignore to avoid committing files created when compiling WRF (now that we compile directly within the source folder)
additions to gitignore, mostly in LMDZ.COMMON