Signed auto_increment keys for HASH tables (like for MyISAM tables in 4.0)
nitialize system_charset_info() early. Fixes core dump when starting windows service


heap/hp_hash.c:
  Signed auto_increment keys for HASH tables (like for MyISAM tables in 4.0)
mysql-test/r/create.result:
  More test for type returned by if_null()
mysql-test/t/create.test:
  More test for type returned by if_null()
sql/field.h:
  Remove not needed functions
sql/item.cc:
  Use normal field create function instead of special functions just made for tmp_table_field_from_field_type
sql/mysqld.cc:
  Initialize system_charset_info() early. Fixes core dump when starting windows service
vio/vio.c:
  Added missing timeouts for named pipes and shared memory (fixes core dump on windows)
vio/vio_priv.h:
  Added missing timeout function for named pipes and shared memory (fixes core dump on windows)
vio/viosocket.c:
  Added missing timeout function for named pipes and shared memory (fixes core dump on windows)