Removed redundant guiToolkit option from retistruct()

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/retistruct@1327 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Fixed partial container argument

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/retistruct@1328 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Removed stray @export

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/retistruct@1329 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Updated install instructions so they just refer to r-forge

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/retistruct@1330 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Back to GPL-2 licence

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/retistruct@1331 edb9625f-4e0d-4859-8d74-9fd3b1da38cb