Emit and release temporary variables in global namespace

because the class-body code is exectuted at module-init time.

Cython/Compiler/Symtab.py

@@ -1186,6 +1186,12 @@ class CClassScope(ClassScope):
                 adapt(base_entry.cname), base_entry.visibility)
             entry.is_inherited = 1
             
+    def allocate_temp(self, type):
+        return Scope.allocate_temp(self.global_scope(), type)
+
+    def release_temp(self, cname):
+        return Scope.release_temp(self.global_scope(), cname)
+        
         
 class PropertyScope(Scope):
     #  Scope holding the __get__, __set__ and __del__ methods for