added:
  storage/connect/mysql-test/connect/r/unsigned.result
  storage/connect/mysql-test/connect/t/unsigned.test
modified:
  storage/connect/colblk.cpp
  storage/connect/colblk.h
  storage/connect/connect.cc
  storage/connect/ha_connect.cc
  storage/connect/myconn.cpp
  storage/connect/mysql-test/connect/r/mysql_discovery.result
  storage/connect/mysql-test/connect/r/xml.result
  storage/connect/myutil.cpp
  storage/connect/myutil.h
  storage/connect/plgdbsem.h
  storage/connect/tabdos.cpp
  storage/connect/tabfix.cpp
  storage/connect/tabmysql.cpp
  storage/connect/tabutil.cpp
  storage/connect/valblk.cpp
  storage/connect/valblk.h
  storage/connect/value.cpp
  storage/connect/value.h
  storage/connect/xobject.cpp
  storage/connect/xobject.h