Abinit: Added package(s) (#1995)

* First version of Abinit package

* Ignore *.swp files

* Add libxc, etsf_io packages

* AtomPaw package

* Make Abinit depend on mpi@2: and external version of libxc, netcdf, hdf5, etsf_io

* etsf_io: install Fortran modules in prefix.include

* Remove etsf_io from abinit requirements

* Add libxc2.2.1 (required by Abinit and atompaw)

* Cleanup

* Run make check

* Cleanup

* Use ld_flags instead of hard-coded libs, fix pep8, add copyright

* Put scalapack before lapackblas

var/spack/repos/builtin/packages/libxc/package.py

@@ -34,6 +34,7 @@ class Libxc(Package):
 
     version('3.0.0', '8227fa3053f8fc215bd9d7b0d36de03c')
     version('2.2.2', 'd9f90a0d6e36df6c1312b6422280f2ec')
+    version('2.2.1', '38dc3a067524baf4f8521d5bb1cd0b8f')
 
     def install(self, spec, prefix):
         # Optimizations for the Intel compiler, suggested by CP2K