Changed the way, distribution archives are build:
- env.ExtraDist() names the file to be distributed, no matter if
they are generated.
- For automatically collecting the sources, env.DistSourcesOf() is
used now.
git-svn-id: https://svn.ibp.de/svn/capisuite/trunk/capisuite@407 4ebea2bb-67d4-0310-8558-a5799e421b66