look mom, migrations in action. This adds a couple of indexes

to mysql regions that should help on performance of some of the
selects.  We should start capturing more data on performance bits
to figure out where else we are missing indexes and add them via
migrations as well.

OpenSim/Data/MySQL/Resources/002_RegionStore.sql

@@ -0,0 +1,6 @@
+BEGIN;
+
+CREATE index prims_regionuuid on prims(RegionUUID);
+CREATE index primitems_primid on primitems(primID);
+
+COMMIT;