ROBODoc robodoc

Working dirwalk version.
Added design in text and uml format.
(UML for the data structure).

More refactoring
Added simple unittest for development of DIRWALK

double character header types.

Merge of the DocBook Sources and minor updates.

The index is now generated with catagories such as variable, function,
class, method, etc.

Import of all sources, documentation, and test suite.