Fix #418 (wrong error message)

Cython/Compiler/Symtab.py

@@ -499,7 +499,7 @@ class Scope(object):
             if entry.as_module:
                 scope = entry.as_module
             else:
-                error(pos, "'%s' is not a cimported module" % scope.qualified_name)
+                error(pos, "'%s' is not a cimported module" % '.'.join(path))
                 return None
         return scope
         

tests/errors/notcimportedT418.pyx

+import somemod.child
+
+cdef somemod.child.something x
+
+_ERRORS = u"""
+3:5: 'somemod.child' is not a cimported module
+"""