Add paver script that will replace our current build.sh from scripts folder.
Until I update the wiki to describe how this new paver build script works I'm leaving the old one in the repository.
Reviewed by: Pawel Solyga
Coverage: code coverage testing for Python
Coverage.py is a Python module that measures code coverage during test execution.
It uses the code analysis tools and tracing hooks provided in the Python standard
library to determine which lines are executable, and which have been executed.
For more information, see http://nedbatchelder.com/code/modules/coverage.html