Added test for __all__.

Lib/test/output/test_pkg

@@ -29,3 +29,10 @@ t5.string loading
 ['__builtins__', '__doc__', '__file__', '__name__', '__path__', 'foo', 'string', 't5']
 ['__builtins__', '__doc__', '__file__', '__name__', 'string']
 ['__builtins__', '__doc__', '__file__', '__name__', 'spam']
+running test t6
+['__all__', '__builtins__', '__doc__', '__file__', '__name__', '__path__']
+t6.spam loading
+t6.ham loading
+t6.eggs loading
+['__all__', '__builtins__', '__doc__', '__file__', '__name__', '__path__', 'eggs', 'ham', 'spam']
+['eggs', 'ham', 'spam', 't6']

Lib/test/test_pkg.py

@@ -146,6 +146,21 @@ import t5
 print dir(t5)
 print dir(t5.foo)
 print dir(t5.string)
+"""),
+
+    ("t6", [
+    ("t6", None),
+    ("t6 __init__.py", "__all__ = ['spam', 'ham', 'eggs']"),
+    ("t6 spam.py", "print __name__, 'loading'"),
+    ("t6 ham.py", "print __name__, 'loading'"),
+    ("t6 eggs.py", "print __name__, 'loading'"),
+    ],
+"""
+import t6
+print dir(t6)
+from t6 import *
+print dir(t6)
+print dir()
 """),
 
 ]