Added 'sitevariables' table.

This is the table prompted by Mac's email yesterday, which
can contain site-specific configuration options.

'default' _must_ be set for each row, and will be used if
'value' is NULL.

'description' _should_ be set for each row.

The table doesn't have a primary key, but is indexed to
32 characters on the "name" column, so it should be plenty efficient.

libdb functions and web interface forthcoming...

sql/database-create.sql

@@ -904,6 +904,18 @@ CREATE TABLE scheduled_reloads (
   PRIMARY KEY  (node_id)
 ) TYPE=MyISAM;
 
+--
+-- Table structure for table 'sitevariables'
+--
+
+CREATE TABLE sitevariables (
+  name text NOT NULL,
+  value text,
+  defaultvalue text NOT NULL,
+  description text,
+  KEY name (name(32))
+) TYPE=MyISAM;
+
 --
 -- Table structure for table 'state_timeouts'
 --

sql/database-migrate.txt

@@ -139,3 +139,16 @@ last_net_act,last_cpu_act,last_ext_act);
 
        These fields had never been used, so the type change and init
        are okay.
+
+1.223: Create empty 'sitevariables' table with the following schema:
+
+       CREATE TABLE sitevariables (
+         name text NOT NULL,
+	 value text,
+	 defaultvalue text NOT NULL,
+	 description text,
+	 KEY name (name(32))
+       ) TYPE=MyISAM;
+
+
+