* keygen.c (keygen_get_std_prefs): Set reference count when creating the
temporary user ID.
* keyedit.c (keyedit_menu): Merge updpref and setpref.  Keep updpref as an
invisible alias.  Add invisible alias for revphoto. Fix small memory leak
when using "setpref" (not all of the uid was freed). (menu_revkey):
Trigger a trust rebuild after revoking a key. Don't allow revoking an
already-revoked whole key. (menu_revsubkey): Don't allow revoking an
already-revoked subkey.