Merge pull request #7 from zopefoundation/fix-buildout

force persistent and interface eggs in test and interpreter scripts

buildout.cfg

@@ -27,12 +27,15 @@ python = develop
 [test]
 recipe = zc.recipe.testrunner
 eggs = BTrees [test]
+       ${buildout:eggs}
+defaults = ['-sBTrees']
 
 [test_w_zodb]
-recipe = zc.recipe.testrunner
+<= test
 eggs = BTrees [test,ZODB]
+       ${buildout:eggs}
 
 [scripts]
 recipe = zc.recipe.egg
-eggs = BTrees [test,ZODB]
+eggs = ${test_w_zodb:eggs}
 interpreter = py