test_sandbox.py fails with python2.4

martijn@ninja:~/Desktop/distribute-0.6.11 $ python2.4 ./setuptools/tests/test_sandbox.py

File "./setuptools/tests/test_sandbox.py", line 59 finally: ^ SyntaxError: invalid syntax

It runs on python2.6 :

martijn@ninja:~/Desktop/distribute-0.6.11 $ python2.6 ./setuptools/tests/test_sandbox.py --snip-- Ran 1 test in 0.003s

FAILED (errors=1)

making sure all supported Python version are called when running tests refs #149

→ cf793f5a5318

make sure all tests passes on all python versions fixes #149

→ 28782800ad04