Add get_dataset() as a way to get the definition of a dataset from python.
https://github.com/collectd/collectd/issues/771
python: Add get_dataset() to the man page.
Merge pull request #774 from trenkel/master

Adding get_dataset() to python
Merge branch 'master' into debian
updating build.sh results
Merge branch "debian" into debian-wheezy-backports