[Kst] kdeextragear-2/kst/kst

[George Staikos]

CVS commit by staikos: 

integrate the equation node visitor as implemented by Andrew Coles (thanks!)
This should make it easy to implement new types of optimizations!
  (in which case we should create Equation::optimize() to run them all,
   perhaps with bitfield to indicate which ones to run)


  M +69 -20    enodes.cpp   1.11
  M +34 -2     enodes.h   1.7
  M +1 -1      kstequationcurve.cpp   1.51
  M +1 -1      ksteventmonitorentry.cpp   1.8