* Move type_name<> to JournalCppDefs.hh and namespace Cpp and enable automatic handling on *, & and const types

* Add JOURNAL_ADD_TYPE, JOURNAL_ADD_TYPE_INTERNAL, JOURNAL_TYPE_EXTERNAL 

* Leverage argument<> for CArrayT<> elements

* Add Journal::to_lower() and improve object naming when the class name is all capitals

* Prevent de-referencing of possibly invalid argument pointers

* Add define_consrtuct[_default] to simplify for non-opaque data constructors, e.g., vectors, planes, matrices, transforms, etc.

* Fix a bug where references to a pointer could inadvertently dereference an invalid pointer

* Disable automatic includes by default; enable them by defining JOURNAL_AUTO_INCLUDE.

* Add JOURNAL_MAIN_VOID to prevent return from the main() function in C++ journals.

* Add extract_directory() and replace_filename() in JournalFileSystem.hh/cc