From Alja.

TEveCalo2DGL, TEveCalo3DGL:
Assert palette in DirectDraw().

TEveCaloData:
Add DataChanged() to notify all referenced calo-viz objects to refresh
cell id cache, update eta, phi limits and palette.

TEveCaloVizEditor:
Set eta, phi limits for TEveGValuators in SetModel().


git-svn-id: http://root.cern.ch/svn/root/trunk@24291 27541ba8-7e3a-0410-8455-c3a389f83636