Change the interface to sqlite3GenerateConstraintChecks() for improved lucidity

and to fix issues in dealing with UPDATEs for WITHOUT ROWID tables.  Make sure
iDataCur and iIdxCur are initialized when processing DELETEs of a VIEW.
UPDATE processing distinguishes between changes to ROWID and PRIMARY KEY.

FossilOrigin-Name: c525ac5630d6bcd51842cfc84f2c2c50be9cec1c

src/delete.c

@@ -324,6 +324,7 @@ void sqlite3DeleteFrom(
 #if !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER)
   if( isView ){
     sqlite3MaterializeView(pParse, pTab, pWhere, iTabCur);
+    iDataCur = iIdxCur = iTabCur;
   }
 #endif