- Added (empty) directories "html" & "latex". Those directories are
created by doxygen, but as they are used in the CMakeList.txt, they
must be present even before the fisrt run of cmake (otherwise cmake
choke on them).
- Doxygen sets to only generate html & pdf (through LaTeX) documentation.
- All ".dox" files corrected to suit the new function members naming
scheme (some work may remains in code examples).