…Makefiles.

Switching between master and develop branches can result in controller directories sticking around that only contain the results of a build on the previous branch. test_suite.py was trying (and failing) to run make in those directories.

In the case of ShapeWithFixedWebTexture.proto, the reference to a file in the github develop branch was causing that file to be left as changed when running test_suite.py in the develop branch.