prepare sharding / partitioning init

- create exchange-0001.sql with functions to create all tables and partitions / shards
- create exchange-0002.sql for the master db

src/exchangedb/Makefile.am

@@ -19,6 +19,7 @@ sql_DATA = \
   benchmark-0001.sql \
   exchange-0000.sql \
   exchange-0001.sql \
+  exchange-0002.sql \
   drop0001.sql
 
 EXTRA_DIST = \

src/exchangedb/drop0001.sql

@@ -72,4 +72,7 @@ DROP FUNCTION IF EXISTS exchange_do_recoup_to_reserve;
 -- FIXME: drop other stored functions!
 
 -- And we're out of here...
+
+SELECT _v.unregister_patch('exchange-0002');
+
 COMMIT;