modified:   storage/connect/domdoc.cpp

Fix MDEV-12768: -Wformat-overflow compile warnings
  modified:   storage/connect/global.h
  modified:   storage/connect/jsonudf.cpp
  modified:   storage/connect/plugutil.cpp
  modified:   storage/connect/tabvct.cpp

Typo (in external_lock)
  modified:   storage/connect/ha_connect.cc

Remove some warnings
  modified:   storage/connect/odbconn.cpp
  modified:   storage/connect/tabmysql.cpp

Add MEM_RESERVE flag to virtualAlloc
  modified:   storage/connect/plgdbutl.cpp

Fix MDEV-12573:
Accept=1 may show incorrect value for NULL column in CONNECT TBL
  modified:   storage/connect/tabutil.cpp

Fix wrong setting of key size when greater than 2G
 modified:   storage/connect/xindex.cpp