reading lines for tracers in emissions table, adding smoke to chem
default compatible_chem_opt=0
adding chem_ to name
adding tracers in add_fire_emissions  (was _to_chem)
added link to compatible namelist.fire_emissions in test/em_fire/chem
Revert "adding perimeter to matlab path"

This reverts commit eaaea12d0cfc1440443c698d8ab655038f98d85e.
adding NDWI and NDVI to the registry
Merge branch 'jm2/chem'
Merge branch 'master' into vk/mergge
adding perimeter to matlab path