python3: Install Mako Templates for Python

Piglit [1] requires Mako templates [2].

> Mako is a template library written in Python. It provides a familiar,
> non-XML syntax which compiles into Python modules for maximum
> performance. Mako's syntax and API borrows from the best ideas of many
> others, including Django and Jinja2 templates, Cheetah, Myghty, and
> Genshi. Conceptually, Mako is an embedded Python (i.e. Python Server
> Page) language, which refines the familiar ideas of componentized
> layout and inheritance to produce one of the most straightforward and
> flexible models available, while also maintaining close ties to Python
> calling and scoping semantics.

[1] https://cgit.freedesktop.org/piglit/
[2] http://www.makotemplates.org/

python-3.6.2-0.build.sh

@@ -34,3 +34,4 @@ pip3 install SciPy NumPy Matplotlib pandas SymPy nose
 pip3 install scikit-learn
 pip3 install seaborn
 pip3 install metaseq
+pip3 install Mako