OpenModelicaMetaProgramming.doc and .pdf

Moved all exercises to a separate appendix

DrModelica: Small update of text and link
to DAEexample

git-svn-id: https://openmodelica.org/svn/OpenModelica/trunk/doc@2761 f25d12d1-65f4-0310-ae8a-bbce733d8d8e

Author: petfr