direct: Kind of hacky, but make 'pandac' install the extensions.

direct/src/pandac/__init__.py

@@ -1,5 +1,32 @@
 # N.B. PandaModules is generated at build time by CMake
 from PandaModules import *
+import __builtin__
 
 # Now import all extensions:
+from direct.extensions_native.extension_native_helpers import *
+extensions = [
+    'CInterval', 'EggGroupNode', 'EggPrimitive', 'HTTPChannel', 'Mat3',
+    'NodePath', 'NodePathCollection', 'OdeBody', 'OdeGeom', 'OdeJoint',
+    'OdeSpace', 'Ramfile', 'StreamReader', 'VBase3', 'VBase4'
+]
 
+# Prior to importing, we need to make the Dtool_funcToMethod function and
+# the extended class available globally. This is hacky, but tacking it on
+# __builtin__ works just fine:
+import __builtin__
+__builtin__.Dtool_funcToMethod = Dtool_funcToMethod
+__builtin__.Dtool_ObjectToDict = Dtool_ObjectToDict
+
+for extension in extensions:
+    if extension not in locals():
+        # Not a class we have compiled in, skip it!
+        continue
+
+    module = 'direct.extensions_native.%s_extensions' % extension
+
+    setattr(__builtin__, extension, locals()[extension])
+    __import__(module)
+    del __builtin__.__dict__[extension]
+
+del __builtin__.Dtool_funcToMethod
+del __builtin__.Dtool_ObjectToDict