modified:
  storage/connect/ha_connect.cc

- Fix MDEV-7494 (adding Insert_quoted in the STRING class)
modified:
  storage/connect/tabmysql.cpp
  storage/connect/xobject.cpp
  storage/connect/xobject.h

- Fix MDEV-7498 in value.cpp (AllocateValue)
modified:
  storage/connect/value.cpp

- Handle backslash in Json serialize + uchar + typo.
modified:
  storage/connect/json.cpp
  storage/connect/tabjson.cpp