Release candidate of nbody shootout benchmark



git-svn-id: http://svn.code.sf.net/p/chapel/code/trunk@21958 3a8e244f-b0f2-452b-bcba-4c88e055c3ca
Oops, forgot to add this file



git-svn-id: http://svn.code.sf.net/p/chapel/code/trunk@21959 3a8e244f-b0f2-452b-bcba-4c88e055c3ca