ttsnoop: drag into a modern C++ century

ttsnoop: drag into a modern C++ century

This program has never worked very well, and it may still not work
very well.  This commit removes the ancient C++ headers and uses
modern replacements with some changes required due to the different
interfaces.

It builds a lot cleaner, and no longer does stupid things like
deleteing char *, ostream.str()'s, and the like.

This program could be really useful if it worked well. Some thought
should be givien in the future to decouple this SW from dtappbuilder
and maybe just rewrite from scratch.