Add new package arbor (#11914)
Add new package arbor (#11914)

* Add new package arbor

Change-Id: I70a442d6ad74979d13bd9f599df238c085d4baf9

* Update package.py

* add additional dependencies

* change download to tar-ball

* py26 compatibility

* restrict noqas and expand comment

Co-authored-by: Eric Müller <92077450b9044303d92f5e65cc1df76bc62504ed@kip.uni-heidelberg.de>
LLNL/spack,iulian787/spack,iulian787/spack,LLNL/spack,LLNL/spack,iulian787/spack,LLNL/spack,iulian787/spack,iulian787/spack,LLNL/spack