release check list

(0. test compile and test run a clean checkout on a clean system
   configure with --debug --all=buildin, then without
   not required anymore: autotest does it now)
1. check next version number and previous revision in tags/
    temporary: also bump librnd's version
2. update the changelog
3. rewrite the release notes
4. modify version number in scconfig
5. commit trunk
6. svn tag using URLs
7. update the timeline, events and doc/news.html
8. update locally built binaries: windows

