Fix for BIT(X) field as string


mysql-test/r/func_gconcat.result:
  Fix wrong merge
mysql-test/r/func_sapdb.result:
  Use results so that dimitry can fix them properly
mysql-test/r/innodb.result:
  Update test after fast TRUNCATE in InnoDB
mysql-test/r/ps_1general.result:
  After megre fixes
mysql-test/r/type_bit.result:
  New test to verify patch for Bit fields
mysql-test/t/ps_1general.test:
  After merge fixes
mysql-test/t/type_bit.test:
  New test to verify patch for Bit fields
sql/field.cc:
  Fix for new my_strntod()
  Fix for BIT(X) field as string
sql/item.h:
  Fix for new my_strntod()
sql/item_func.h:
  Fix for new my_strntod()
sql/item_sum.h:
  Fix for new my_strntod()
sql/procedure.h:
  Fix for new my_strntod()
sql/sql_base.cc:
  Port fix for INSERT DELAYED with prepared statements to 5.0