Add back pubkey until I get a chance to install new stuff.

sql/database-create.sql

@@ -881,6 +881,7 @@ CREATE TABLE users (
   pswd_expires date default NULL,
   cvsweb tinyint(4) NOT NULL default '0',
   emulab_pubkey text,
+  home_pubkey text,
   adminoff tinyint(4) default '0',
   PRIMARY KEY  (uid),
   KEY unix_uid (unix_uid)