- added functions setAccumulated() and getAccumulated() and internal member   field "accumulated" - overwrite function min() and max() functions to be able to return the   accumulated min/max (if needed)
- added functions setAccumulated() and getAccumulated() and internal member
  field "accumulated"
- overwrite function min() and max() functions to be able to return the
  accumulated min/max (if needed)

git-svn-id: 526f3b90ad6d9b1dfe840af828070ca3d99521ac@5261 d2cacbed-c0f6-0310-851a-9dad52fc623a

johannes85/core