Added wedge coordinates and testing code

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/retistruct@1268 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Formatting changes from roxygen2

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/retistruct@1269 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
NAMESPACE changes needed for tests

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/retistruct@1270 edb9625f-4e0d-4859-8d74-9fd3b1da38cb