Updated tox.ini to work with out Hudson Matrix Build

tox.ini

@@ -1,9 +1,39 @@
 [tox]
 envlist = py24,py25,py26,py27
+
 [testenv]
+distribute = True
+sitepackages = False
 commands = nosetests
 
-[testenv:py27-xunit-xmlcover]
+[testenv:py24]
+basepython = python2.4
+commands = pip -E {envdir} install -r contrib/requirements/default.txt
+           pip -E {envdir} install -r contrib/requirements/py24.txt
+           pip -E {envdir} install -r contrib/requirements/test.txt
+           nosetests
+
+[testenv:py25]
+basepython = python2.5
+commands = pip -E {envdir} install -r contrib/requirements/default.txt
+           pip -E {envdir} install -r contrib/requirements/py25.txt
+           pip -E {envdir} install -r contrib/requirements/test.txt
+           nosetests
+
+[testenv:py26]
+basepython = python2.6
+commands = pip -E {envdir} install -r contrib/requirements/default.txt
+           pip -E {envdir} install -r contrib/requirements/test.txt
+           nosetests
+
+[testenv:py27]
 basepython = python2.7
-commands = nosetests --with-xunit --with-coverage3 --cover3-xml
+commands = pip -E {envdir} install -r contrib/requirements/default.txt
+           pip -E {envdir} install -r contrib/requirements/test.txt
+           nosetests
 
+[testenv:py27-xunit-xmlcover]
+basepython = python2.7
+commands = pip -E {envdir} install -r contrib/requirements/default.txt
+           pip -E {envdir} install -r contrib/requirements/test.txt
+           nosetests --with-xunit --with-coverage3 --cover3-xml