[Kst] kdeextragear-2/kst/kst

[George Staikos]

CVS commit by staikos: 

- port the fit and filter dialogs to support strings
- remove unchecked dynamic casts (static cast was fine there anyway)
- change a couple of return(x); to return x; while I see them


  M +3 -3      kstbasecurve.cpp   1.20
  M +86 -8     kstfilterdialog_i.cpp   1.21
  M +1 -0      kstfilterdialog_i.h   1.6
  M +82 -10    kstfitdialog_i.cpp   1.44
  M +1 -0      kstfitdialog_i.h   1.12
  M +1 -1      ksthistogram.cpp   1.33
  M +2 -2      kstlabel.cpp   1.47