code style: add Astyle config
code style: applied astyle (w/o break-blocks)
code style: capitalizing constants
code style: dvector -> DVectorT
code style: template parameter coeffT -> CoeffT
code style: template parameter buildT -> BuildT
code style: template parameter controllerT -> ControllerT
code style: class name 'polynomial' -> 'Polynomial'
code style: typdef 'auto_build_tuple' -> 'AutoBuildTuple'
code style: some manual cleanup

astyle cannot catch everything ...
Merge pull request #21 from torbjoernk/feature/code-style-showcase

code style --- now really get that done