[pygi] make __all__ be a list of strings, fix override mechanism to use it correctly

[John Palmieri <johnp src gnome org>]

commit 4410abd589a2f64cfbd7bbcb4013fae9e4aa734f
Author: John (J5) Palmieri <johnp redhat com>
Date:   Wed Apr 28 13:19:48 2010 -0400

    make __all__ be a list of strings, fix override mechanism to use it correctly
    
    * before we were adding classes to the __all__ module property but
      the convention is to use the name of the class
    * simplified the check to just check the name against __all__
      instead of trying to get the class and then checking the class
      against None as well as in __all__
    * went through all the overrides and made __all__ be a list of strings

 gi/module.py                       |    9 ++++-----
 gi/overrides/GIMarshallingTests.py |    2 +-
 gi/overrides/Gdk.py                |    2 +-
 3 files changed, 6 insertions(+), 7 deletions(-)
---
diff --git a/gi/module.py b/gi/module.py
index 3afdc18..223ea60 100644
--- a/gi/module.py
+++ b/gi/module.py
@@ -174,11 +174,10 @@ class ModuleProxy(object):
         self._overrides_module = overrides_module
 
     def __getattr__(self, name):
-        attribute = getattr(self._overrides_module, name, None)
-        exports = getattr(self._overrides_module, '__all__', ())
-        if attribute is not None and attribute not in exports:
-            attribute = None
-        if attribute is None:
+        override_exports = getattr(self._overrides_module, '__all__', ())
+        if (name in override_exports):
+            attribute = getattr(self._overrides_module, name, None)
+        else:
             attribute = getattr(self._dynamic_module, name)
         return attribute
 
diff --git a/gi/overrides/GIMarshallingTests.py b/gi/overrides/GIMarshallingTests.py
index 0cc6915..1ff9147 100644
--- a/gi/overrides/GIMarshallingTests.py
+++ b/gi/overrides/GIMarshallingTests.py
@@ -65,5 +65,5 @@ class OverridesObject(GIMarshallingTests.OverridesObject):
 OverridesObject = override(OverridesObject)
 
 
-__all__ = [OVERRIDES_CONSTANT, OverridesStruct, OverridesObject]
+__all__ = ['OVERRIDES_CONSTANT', 'OverridesStruct', 'OverridesObject']
 
diff --git a/gi/overrides/Gdk.py b/gi/overrides/Gdk.py
index 48f845b..5048939 100644
--- a/gi/overrides/Gdk.py
+++ b/gi/overrides/Gdk.py
@@ -44,7 +44,7 @@ class Rectangle(Gdk.Rectangle):
 Rectangle = override(Rectangle)
 
 
-__all__ = [Rectangle]
+__all__ = ['Rectangle']
 
 
 import sys