Add gfortran build config for NCI machines.
Put in LDFLAGS for nci gfortran build.
Add 'save' attribute to various vars, need for gfortran build.
Missing source dir when building atmos_phys.
Add save attribute - needed for gfortran build.
gfortran uses traditional cpp, so need to do concatenation (##) and stringify (#) differently.
Use traditional concatentation and stringify for gfortran.
More preprocessor concatenation special cases for gfortran.
Merge pull request #39 from nicholash/gfortran-build

Gfortran build