- in DOMNODELIST::DropItem
  if (Listp == NULL || Listp->length <= n)
    return true;
is wrong, should be:
  if (Listp == NULL || Listp->length < n)
    return true;
- Crash in discovery with libxml2 in XMLColumns because:
            if (!tdp->Usedom)    // nl was destroyed
              vp->nl = vp->pn->GetChildElements(g);
is executed with vp->pn uninitialized. Fixed by adding:
          vp->pn = node;
line 264.
-In discovery with libxml2 some columns are not found.
Because list was not recovered properly, nodes being modified and not reallocated.
Fixed lines 214 and 277.
  modified:   storage/connect/domdoc.cpp
  modified:   storage/connect/tabxml.cpp

Add support for zipped table files
  modified:   storage/connect/domdoc.cpp
  modified:   storage/connect/domdoc.h
  modified:   storage/connect/filamap.cpp
  modified:   storage/connect/filamap.h
  modified:   storage/connect/filamzip.cpp
  modified:   storage/connect/filamzip.h
  modified:   storage/connect/ha_connect.cc
  modified:   storage/connect/libdoc.cpp
  modified:   storage/connect/plgdbutl.cpp
  modified:   storage/connect/plgxml.cpp
  modified:   storage/connect/plgxml.h
  modified:   storage/connect/tabdos.cpp
  modified:   storage/connect/tabdos.h
  modified:   storage/connect/tabfmt.cpp
  modified:   storage/connect/tabjson.cpp
  modified:   storage/connect/tabxml.cpp