Revert "Return python-setuptools-git builddep"

This reverts commit b54a0bfc092e532564db4233dd57b76e67569dd9.

Revert "Manually install binaries"
This reverts commit 242e4c786f298eb0af4dbdccf2e8897d91a028a8.

Revert "Hack away requirements in setup.py"
This reverts commit 39b2704780402b84c838687a68abc0ecceefc3c3.

Revert "Remove setuptools-git from Build-Depends"
This reverts commit c0406d50b3c2e2d0c1d6777961e223de1c6ec8e5.

Revert "Remove testing from debian/rules"
This reverts commit e636bb99f0448444af46a45c62aa7eac6fc74b11.