Fixed connect compilation failure.

storage/connect/csort.cpp:
  min/max are not defined by my_global.h anymore, include osutil.h instead.
storage/connect/filamfix.cpp:
  min/max are not defined by my_global.h anymore, include osutil.h instead.
storage/connect/ha_connect.cc:
  Renamed MYSQL_ERROR -> Sql_condition.
  Renamed KEY::key_parts -> KEY::user_defined_key_parts.
  Adjusted connect according to:
  WL#4305 - storage-engine private data area per physical table.
storage/connect/ha_connect.h:
  Adjusted connect according to:
  WL#4305 - storage-engine private data area per physical table.
storage/connect/inihandl.c:
  min/max are not defined by my_global.h anymore, include osutil.h instead.
storage/connect/osutil.h:
  min/max are not defined by my_global.h anymore, define them for C as well.
storage/connect/taboccur.cpp:
  Include server headers before osutil.h to avoid min/max redefinition.
storage/connect/tabpivot.cpp:
  Include server headers before osutil.h to avoid min/max redefinition.
storage/connect/tabtbl.cpp:
  Include server headers before osutil.h to avoid min/max redefinition.
storage/connect/tabxcl.cpp:
  Include server headers before osutil.h to avoid min/max redefinition.
storage/connect/value.cpp:
  min/max are not defined by my_global.h anymore, include osutil.h instead.
  Include server headers before osutil.h to avoid min/max redefinition.