Pip can install multiple dependencies at the same time, so there is no need to
use xargs -n1. It's significantly slower with -n1, so let's not do it with no
reason.
* Factor out some of the code shared between the different sytest jenkins scripts
* Exclude jenkins from the MANIFEST
* Fix dendron build
* Missing new line
* Poke jenkins
* Export the PORT_BASE and PORT_COUNT
* Poke jenkins
Richard van der Hoff