[Kst] kdeextragear-2/kst/kst

[George Staikos]

CVS commit by staikos: 

- clean up our slave vectors and scalars when data objects are deleted.
- clean up KstFiles when RVectors are removed
- start to add Purge code, but it doesn't seem to work right.  I think there are
  still stale references to objects around.  At least it won't crash now, but
  cleaning up just doesn't work right yet.


  M +13 -0     kstdataobject.cpp   1.9
  M +28 -24    kstdoc.cpp   1.29
  M +2 -2      kstrvector.cpp   1.22