add LegacySitOffsets option to configuration file

bin/OpenSimDefaults.ini

@@ -117,6 +117,13 @@
     ;; Allow child agents to see into the region even if their root counterpart isn't allowed in here
     see_into_region = true
 
+	;; use legacy math for sittarget offset "correction"
+	;; set this option to false to use improved math more compatibility with SL.
+	;; keep it true if you have many old objects with sits set by scripts.
+	;; the offset in question is added to the SitTarget to find the sitting avatar position.
+	;; acording to its size, etc.
+	; LegacySitOffsets = true;
+	
     ; Maximum number of position, rotation and scale changes for each prim that the simulator will store for later undos
     ; Increasing this number will increase memory usage.
     MaxPrimUndos = 20