introduce pasteK() shortcut

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/robustbase@642 694ef91d-65df-0310-b7bb-92e67a308ead
covMcd(): 
1) FastMCD: "kmini = 5" as new optional argument (untested)
2) return "all iBest", not just first ==> adapt print() method
3) crit := obj := log(det|.|) instead of det|.|
4) deterministic MCD: by default no longer warn about "wrong early convergence"

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/robustbase@643 694ef91d-65df-0310-b7bb-92e67a308ead