PR python/14386:

	PR python/14386:
	* varobj.c (update_dynamic_varobj_children): Don't call
	PyIter_Check.
gdb/testsuite
	* gdb.python/py-mi.exp: Add test for printer whose children
	are a list.
	* gdb.python/py-prettyprint.c (struct children_as_list): New.
	(main): New variable children_as_list.
	* gdb.python/py-prettyprint.py (class pp_children_as_list):
	New.
	(register_pretty_printers): Register new printer.