Half way to new structure routine.

Combining structure and light routines into one solution to solve
problem of necessary iteration. Proving difficult!
No idea where we are from Mac.
Merge branch 'master' of https://github.com/adfriend45/H9

Conflicts:
	SOURCE/H9.f90
	SOURCE/H9.o
	SOURCE/tree.f90
	SOURCE/tree.mod
	SOURCE/tree.o
	SOURCE/trees_structure.f90
	SOURCE/trees_structure.o
	SOURCE/write_outputs.o
New structures routine to cal. equilibrium structure.