Clear out old non-servent and non-file resulthints

data/sql/dbmigrate-28_to_29.sql

@@ -0,0 +1,11 @@
+-- Script to migate from db version 28 to 29.
+--
+-- The resulthint field used to store both servent://, file:// and all other urls
+--  but all non-servent:// and file:// urls were filtered out. since we now are actually
+--  using http:// resulthints, we need to weed out the 'bad ones'
+
+-- So remoev all non-file:// or servent:// resulthints
+
+UPDATE playlist_item SET result_hint = "" WHERE playlist_item.guid IN (SELECT guid FROM playlist_item WHERE result_hint NOT LIKE "file://%" AND result_hint NOT LIKE "servent://%");
+
+UPDATE settings SET v = '29' WHERE k == 'schema_version';