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

[Mike Fenton]

SVN commit 955464 by fenton:

Add caching of rendered label details.
Fix label alignment issues in Plots.


 M  +41 -16    labelitem.cpp  
 M  +9 -1      labelitem.h  
 M  +44 -15    labelrenderer.cpp  
 M  +47 -6     labelrenderer.h  
 M  +2 -2      legenditem.cpp  
 M  +98 -57    plotitem.cpp  
 M  +10 -8     plotitem.h