added relion 3.0.8 [latest stable version in 3.0 branch] as well as 3.1_beta (#13539)
added relion 3.0.8 [latest stable version in 3.0 branch] as well as 3.1_beta (#13539)

* added relion 3.0.8 [latest stable version in 3.0 branch] as well as 3.1_beta

* relion 3.1 beta compiles without Benchmarking build type see https://github.com/3dem/relion/issues/533

* relion 3.0.X - 3.1 now supports latest cmake@3

iulian787/spack,LLNL/spack,iulian787/spack,iulian787/spack,LLNL/spack,LLNL/spack,iulian787/spack,iulian787/spack,LLNL/spack,LLNL/spack