Make ID of SMS Carrier not autoincrement

Since we're doing fixed IDs for SMS Carrier, we change the definition
so it's not auto increment.

classes/laconica.ini

@@ -292,7 +292,8 @@ created = 142
 modified = 384
 
 [sms_carrier__keys]
-id = N
+id = K
+name = U
 
 [subscription]
 subscriber = 129

db/laconica.sql

@@ -31,7 +31,7 @@ create table avatar (
 ) ENGINE=InnoDB CHARACTER SET utf8 COLLATE utf8_bin;
 
 create table sms_carrier (
-    id integer auto_increment primary key comment 'primary key for SMS carrier',
+    id integer primary key comment 'primary key for SMS carrier',
     name varchar(64) unique key comment 'name of the carrier',
     email_pattern varchar(255) not null comment 'sprintf pattern for making an email address from a phone number',
     created datetime not null comment 'date this record was created',