Many new test cases added, that mostly work. Currently 18 errors in

without_rowid3.test.  Also there is a hack marked by a /*FIXME*/ comment 
on at fkey.c:547 that needs fixing.

FossilOrigin-Name: 39e32187b66405e00dbd44685f6cdd269c90f5e5

src/build.c

@@ -1653,6 +1653,7 @@ static void convertToWithoutRowidTable(Parse *pParse, Table *pTab){
     assert( pParse->pNewTable==pTab );
     pPk = sqlite3CreateIndex(pParse, 0, 0, 0, pList, pTab->keyConf, 0, 0, 0, 0);
     if( pPk==0 ) return;
+    pPk->autoIndex = 2;
     pTab->iPKey = -1;
   }else{
     pPk = sqlite3PrimaryKeyIndex(pTab);

src/delete.c

@@ -399,8 +399,6 @@ void sqlite3DeleteFrom(
     */
     sqlite3OpenTableAndIndices(pParse, pTab, OP_OpenWrite,
                                iTabCur, &iDataCur, &iIdxCur);
-    assert( iDataCur!=iTabCur );
-    assert( iDataCur>=iIdxCur );
 
     /* Loop over the primary keys to be deleted. */
     addr = sqlite3VdbeAddOp1(v, OP_Rewind, iEph);

src/fkey.c

@@ -544,7 +544,7 @@ static void fkScanChildren(
   ** is taking place as part of a DELETE operation (operation D.2), omit the
   ** row being deleted from the scan by adding ($rowid != rowid) to the WHERE 
   ** clause, where $rowid is the rowid of the row being deleted.  */
-  if( pTab==pFKey->pFrom && nIncr>0 ){
+  if( pTab==pFKey->pFrom && nIncr>0 && HasRowid(pTab) /*FIXME*/ ){
     Expr *pEq;                    /* Expression (pLeft = pRight) */
     Expr *pLeft;                  /* Value from parent table row */
     Expr *pRight;                 /* Column ref to child table */

src/vdbeblob.c

@@ -178,6 +178,10 @@ int sqlite3_blob_open(
       pTab = 0;
       sqlite3ErrorMsg(pParse, "cannot open virtual table: %s", zTable);
     }
+    if( pTab && !HasRowid(pTab) ){
+      pTab = 0;
+      sqlite3ErrorMsg(pParse, "cannot open table without rowid: %s", zTable);
+    }
 #ifndef SQLITE_OMIT_VIEW
     if( pTab && pTab->pSelect ){
       pTab = 0;