Added 2nd-order solver.


git-svn-id: https://svn.version.fz-juelich.de/scafacos/trunk@3029 5161e1c8-67bf-11de-9fd5-51895aff932f
Merge remote-tracking branch 'git-svn'
Merge branch 'master' of github.com:scafacos/scafacos