Renamed sql update files to proper Trinity naming standard.

Moved files prior to 6381_world_script_texts.sql to 3.1.3_old folder.

--HG--
branch : trunk

sql/updates/6420_world_scriptname.sql

@@ -0,0 +1,4 @@
+UPDATE `creature_template` SET `ScriptName`='npc_tyrion' WHERE `entry`=7766;
+UPDATE `creature_template` SET `ScriptName`='npc_tyrion_spybot' WHERE `entry`=8856;
+UPDATE `creature_template` SET `ScriptName`='npc_lord_gregor_lescovar' WHERE `entry`=1754;
+UPDATE `creature_template` SET `ScriptName`='npc_marzon_silent_blade' WHERE `entry`=1755;