Update tex-koma-script to 3.09.

Changes:
        * scrkfloa.dtx: new values for option "captions"
        * scrkbase.dtx: fix: \Family@@Numical@@Key --> \Family@@String@@Key
        * scrkbase.dtx: \FamilyStringKey and \FamilyNumericalKey fixed (thanks
          to Michael Pock)
        * scrkfloa.dtx: new options `captions=top', `captions=bot',
          `captions=figureabove',  `captions=figurebelow' new commands
          `\captionaboveof' and `\captionsbelowof'
        * tocbasic.dtx: options "atbegin" and "atend" added to \DeclareNewTOC
        * scrklang.dtx: scrlttr2 supports language naustrian

(minskim)