- NOTE: an experimental implementation of MRR was done but not kept

in this version. Sure enough, it never caused any improvement in
  the execution speed and rather caused a small increase of execution
  time. This is probably because values are sorted by rowid in each
  range of CONNECT indexes. This could be reconsidered if a customer
  have a need for processing very big files.

- Fix a bug in ha_connect::CheckCond. The negated form of BETWEEN and
  IS NULL operators was not recognized.
modified:
  storage/connect/ha_connect.cc

- Add long jump initialization in CntReadNext. This was causing a server
  crash when an error occured in a ReadColumn.
modified:
  storage/connect/connect.cc

- General cleanup of CONNECT source code eliminating all code not used by
  CONNECT, including the MRR test code (saved separately).
modified:
  storage/connect/catalog.h
  storage/connect/colblk.cpp
  storage/connect/colblk.h
  storage/connect/connect.cc
  storage/connect/connect.h
  storage/connect/domdoc.h
  storage/connect/filamap.cpp
  storage/connect/filamap.h
  storage/connect/filamdbf.h
  storage/connect/filamfix.cpp
  storage/connect/filamfix.h
  storage/connect/filamtxt.cpp
  storage/connect/filamtxt.h
  storage/connect/filamvct.cpp
  storage/connect/filamvct.h
  storage/connect/filamzip.cpp
  storage/connect/filamzip.h
  storage/connect/global.h
  storage/connect/ha_connect.cc
  storage/connect/ha_connect.h
  storage/connect/myconn.h
  storage/connect/plgcnx.h
  storage/connect/plgdbsem.h
  storage/connect/plugutil.c
  storage/connect/preparse.h
  storage/connect/reldef.cpp
  storage/connect/reldef.h
  storage/connect/tabcol.h
  storage/connect/tabdos.cpp
  storage/connect/tabdos.h
  storage/connect/tabfix.cpp
  storage/connect/tabfmt.cpp
  storage/connect/tabfmt.h
  storage/connect/table.cpp
  storage/connect/tabmac.h
  storage/connect/tabmul.h
  storage/connect/tabmysql.cpp
  storage/connect/tabmysql.h
  storage/connect/taboccur.h
  storage/connect/tabodbc.cpp
  storage/connect/tabodbc.h
  storage/connect/tabsys.cpp
  storage/connect/tabsys.h
  storage/connect/tabtbl.cpp
  storage/connect/tabtbl.h
  storage/connect/tabutil.h
  storage/connect/tabvct.cpp
  storage/connect/tabvct.h
  storage/connect/tabwmi.cpp
  storage/connect/tabwmi.h
  storage/connect/tabxml.cpp
  storage/connect/tabxml.h
  storage/connect/user_connect.cc
  storage/connect/user_connect.h
  storage/connect/valblk.cpp
  storage/connect/valblk.h
  storage/connect/value.cpp
  storage/connect/value.h
  storage/connect/xindex.cpp
  storage/connect/xindex.h
  storage/connect/xobject.cpp
  storage/connect/xobject.h
  storage/connect/xtable.h

storage/connect/colblk.cpp

@@ -36,7 +36,6 @@ COLBLK::COLBLK(PCOLDEF cdp, PTDB tdbp, int i)
   if ((Cdp = cdp)) {
     Name = cdp->Name;
     Format = cdp->F;
-    Opt = cdp->Opt;
     Long = cdp->Long;
     Precision = cdp->Precision;
     Buf_Type = cdp->Buf_Type;
@@ -46,7 +45,6 @@ COLBLK::COLBLK(PCOLDEF cdp, PTDB tdbp, int i)
   } else {
     Name = NULL;
     memset(&Format, 0, sizeof(FORMAT));
-    Opt = 0;
     Long = 0;
     Precision = 0;
     Buf_Type = TYPE_ERROR;
@@ -122,14 +120,6 @@ bool COLBLK::SetFormat(PGLOBAL g, FORMAT& fmt)
   return false;
   } // end of SetFormat
 
-/***********************************************************************/
-/*  CheckColumn:  a column descriptor is found, say it by returning 1. */
-/***********************************************************************/
-int COLBLK::CheckColumn(PGLOBAL g, PSQL sqlp, PXOB &p, int &ag)
-  {
-  return 1;
-  } // end of CheckColumn
-
 /***********************************************************************/
 /*  Eval:  get the column value from the last read record or from a    */
 /*  matching Index column if there is one.                             */
@@ -154,15 +144,6 @@ bool COLBLK::Eval(PGLOBAL g)
   return false;
   } // end of Eval
 
-/***********************************************************************/
-/*  CheckSort:                                                         */
-/*  Used to check that a table is involved in the sort list items.     */
-/***********************************************************************/
-bool COLBLK::CheckSort(PTDB tdbp)
-  {
-  return (tdbp == To_Tdb);
-  } // end of CheckSort
-
 /***********************************************************************/
 /*  InitValue: prepare a column block for read operation.              */
 /*  Now we use Format.Length for the len parameter to avoid strings    */