add Rolf Turner's rlas() {{not so happy with name}}

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/robustbase@599 694ef91d-65df-0310-b7bb-92e67a308ead
remove 'robustbase' from the 'Depends:' -> adapt examples, tests and demos; also add  historical references

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/robustbase@600 694ef91d-65df-0310-b7bb-92e67a308ead