Reduce logging in CDT update

[vvmruder]

I recognized that if setting "simplification_tinsimp" is used the output explodes on dense point clouds. Couldn't count it but probably millions of lines are written out to std log mentioning CDT update; point location not in face but in vertex. Point (...) ....

I think this really slows down the whole process in the end. Could we improve this in some way? For instance give only some aggregated info at the end of process about how many points where handled why?

[tcommandeur]

Idea: add a counter and show a maximum amount of messages and then suppress the rest.