also adaptive wgtFUN for covComed()

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/robustbase@667 694ef91d-65df-0310-b7bb-92e67a308ead
turn off compatibility warning -- it had been added in 2009 !

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/robustbase@668 694ef91d-65df-0310-b7bb-92e67a308ead