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

[Mike Fenton]

SVN commit 805094 by fenton:

Add reference counting to update cycle and checks before relations/plots are permitted to update.


 M  +5 -3      src/libkst/datasource.cpp  
 M  +1 -1      src/libkst/datasource.h  
 M  +6 -6      src/libkst/datavector.cpp  
 M  +3 -3      src/libkst/object.cpp  
 M  +2 -5      src/libkst/object.h  
 M  +93 -15    src/libkst/updatemanager.cpp  
 M  +11 -1     src/libkst/updatemanager.h  
 M  +3 -2      src/libkst/vector.cpp  
 M  +8 -7      src/libkstapp/plotrenderitem.cpp  
 M  +1 -1      src/libkstapp/plotrenderitem.h  
 M  +4 -10     src/libkstmath/curve.cpp  
 M  +0 -3      src/libkstmath/curve.h  
 M  +7 -4      src/libkstmath/dataobject.cpp  
 M  +21 -0     src/libkstmath/relation.cpp  
 M  +5 -0      src/libkstmath/relation.h  
 AM            tests/datagenerator.pl