[Kst] branches/work/kst/portto4/kst/src/libkstapp

[Mike Fenton]

SVN commit 778208 by fenton:

Major reworking of plot mapping to support Log Axis and reverse internally.
Clean up of Tick Calculation.


 M  +125 -147  plotitem.cpp  
 M  +12 -14    plotitem.h  
 M  +2 -3      plotrenderitem.cpp