Added new sub-board setting bits (SUB_*) from sbbsdefs.h.

exec/load/sbbsdefs.js

@@ -393,6 +393,9 @@ var   SUB_GATE		=(1<<24)	/* Gateway between Network types			*/
 var   SUB_LZH 		=(1<<25)	/* Use LZH compression for msgs				*/
 var   SUB_SSDEF		=(1<<26)	/* Default ON for Scan for Your msgs		*/
 var   SUB_HYPER		=(1<<27)	/* Hyper allocation							*/
+var   SUB_EDIT		=(1<<28)	/* Users can edit msg text after posting	*/
+var   SUB_EDITLAST	=(1<<29)	/* Users can edit last message only			*/
+var   SUB_NOUSERSIG	=(1<<30)	/* Suppress user signatures					*/
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