* target.h (target_get_osdata): Describe.

	* target.h (target_get_osdata): Describe.
	* osdata.h (make_cleanup_osdata_free): Declare.
	* osdata.c (osdata_item_clear): Define even if HAVE_LIBEXPAT is
	not defined.
	(osdata_free_cleanup): New.
	(make_cleanup_osdata_free): New.
	(get_osdata): Fix leak.
	(info_osdata_command): Use make_cleanup_osdata_free.
	(info_processes_command): Delete.
	(_initialize_osdata): Drop undocumented "info processes" alias.
	* mi/mi-main.c (mi_cmd_list_thread_groups): Fix leak.