=====================

Add new modifier mainly for TLS apli : oLevelSetAnalyticalAndShiftedActiveInterOnActiveModifier
Glurp what a name ... here is the translation : 
modifier for OnActive oLevelSet to get the "intersection" with  2 other oLevelset. One is analytical and the other is also a OnActive oLevelSet shifted
by a value given to the constructor. The result of this "intersection" of this  2 others oLevelset replace the value of the visited level set.
Somme signe modification is also done.
More clear ?


oLevelSet
=========

Had oLevelSetAnalyticalAndShiftedActiveInterOnActiveModifier as friend of oLevelSetOnActive


CMakeLists.txt
==============

Remove TR1 stuff which are already in find_package(TR1)



git-svn-id: https://svn.ec-nantes.fr/eXlibris/Octree@277 067bc89c-24c1-4a69-83c4-db531f3c9a32