Bug 690999 - Add project name to xml output

Adding the project* elements to the the xml output.
- doxygen.cpp
  Extended logo copy function to be able to copy to a specified directory (instead of fixed directory specified by HTML_OUTPUT)  and copy logo in case of xml generation

- index.xsd
- compound.xsd
  Adjusting xsd file for new project elements

- xmlgen.cpp
  Added function to add project output and called it at the relevant places.
  Adjusted written xslt file to place the project only once in the result and be able to validate the result file against the general compound.xsd
  small layout correction for codeline

- testing
  Adjusted test output to new project elements