Fortran and Nim compile changes
Merge upstream
Fortran - read file in and map nodes successfully
Complete but buggy
Doesn't crash, but wrong length

Gives length of 2147483637
Cleanup
Fixed - now runs with correct distance

Also some fixes to comport wiht 2003 standard.
Fortran makefile and formatting

Outputs as integer instead of as float (no decimal).
Merging upstream