Don't build the pru binaries directly in the build test cases, instead
use the upstream binaries provided.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Add a test case to verify that every optional module successfully
loads on both Python2 and Python3. This is intended to catch syntax
and module imports that are not compatible between Python versions.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
