- 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/tabmysql.cpp

@@ -527,8 +527,8 @@ bool TDBMYSQL::MakeSelect(PGLOBAL g)
 
   strcat(strcat(strcat(strcat(Query, " FROM "), tk), Tabname), tk);
 
-  if (To_Filter)
-    strcat(strcat(Query, " WHERE "), To_Filter->Body);
+  if (To_CondFil)
+    strcat(strcat(Query, " WHERE "), To_CondFil->Body);
 
   if (trace)
     htrc("Query=%s\n", Query);
@@ -1135,7 +1135,6 @@ MYSQLCOL::MYSQLCOL(MYSQL_FIELD *fld, PTDB tdbp, int i, PSZ am)
         : COLBLK(NULL, tdbp, i)
   {
   Name = fld->name;
-  Opt = 0;
   Precision = Long = fld->length;
   Buf_Type = MYSQLtoPLG(fld->type);
   strcpy(Format.Type, GetFormatType(Buf_Type));
@@ -1395,11 +1394,11 @@ PCMD TDBMYEXC::MakeCMD(PGLOBAL g)
   {
   PCMD xcmd = NULL;
 
-  if (To_Filter) {
+  if (To_CondFil) {
     if (Cmdcol) {
-      if (!stricmp(Cmdcol, To_Filter->Body) &&
-          (To_Filter->Op == OP_EQ || To_Filter->Op == OP_IN)) {
-        xcmd = To_Filter->Cmds;
+      if (!stricmp(Cmdcol, To_CondFil->Body) &&
+          (To_CondFil->Op == OP_EQ || To_CondFil->Op == OP_IN)) {
+        xcmd = To_CondFil->Cmds;
       } else
         strcpy(g->Message, "Invalid command specification filter");