Bug fixes in fusion, plus save different solutions from photosynthesis

1.  Minor bug fixes in fuse/fiss (Ctrl+C/Ctrl+V type).  Extended Ryan's LAI fix to all
    variables, and applied to wood.  A minor change is that now rlai/dlai are relative
    weights so they work for both large and small LAI.
2.  Save all three photosynthesis answers (light-limited, RuBP-limited, CO2-limited) to
    the output.  No real change to the code, although the three cases are always solved
    now.
3.  Update on R scripts.
Minor fixes on shell scripts, no change in the code.