added LSL2 stored procedures

LSL2/STPROC/SECURITY_TABLES_VALID.txt

@@ -0,0 +1,30 @@
+compile subroutine security_tables_valid(ConvType, DataIo, Branch, ReturnedValue)
+begin condition
+pre:
+post:
+end condition
+
+$insert logical
+declare function msg
+equ valid$         to 0    ;* successful
+equ invalid_msg$   to 1    ;* bad data       -   print error message window
+equ invalid_conv$  to 2    ;* bad conversion -          "         "
+equ invalid_nomsg$ to 3    ;* bad but do not print the error message window
+
+ReturnedValue = DataIo       
+status() = Valid$              
+ValidTables = xlate( 'CONFIG', 'TABLENAMES', 1, 'X' )
+*
+begin case
+   case ConvType = 'ICONV'
+      locate DataIo in ValidTables using @vm setting Fpos else
+         status() = invalid_msg$
+      end
+   case ConvType = 'OCONV'
+      * no output
+      ReturnedValue = DataIo
+   case otherwise$
+      ReturnedValue = ''
+      status() = invalid_conv$
+end case
+return