* keygen.c (keygen_set_std_prefs): Build the default preferences list at
runtime as it properly handles algorithms disabled at build or run time.
* getkey.c (merge_selfsigs_main): Properly handle expired user IDs when
the expired self-sig is not the only self-sig.
* misc.c (compress_algo_to_string): Return NULL on failure like all of the
other xxxx_algo_to_string() functions.
* mainproc.c (list_node): Minor spacing tweak to match --list-keys output.
* keylist.c (list_keyblock_print), mainproc.c (list_node): Mark revoked
subkeys as revoked.  Requested by Matthew Wilcox.  Revoked overrides
expiration when both apply.
* keyedit.c (show_prefs): Use compress algo constants.
(show_basic_key_info): Make revoked and expired tags translatable.
* g10.c (rm_group): Properly ungroup from a list of groups.