Simplified test structure a bit, so we no longer need to set PYTHONPATH
The u'' string prefix was reintroduced in Python 3.3, and since we've
dropped py3.2 support we can avoid the whole py{2k,3k}constants.py mess.
diff --git a/tests/test_strings.py b/tests/test_strings.py
index 541b317..2b9a1d1 100644
--- a/tests/test_strings.py
+++ b/tests/test_strings.py
@@ -22,7 +22,7 @@
import rsa
-from constants import unicode_string
+unicode_string = u"Euro=\u20ac ABCDEFGHIJKLMNOPQRSTUVWXYZ"
class StringTest(unittest.TestCase):