key Column Fails".


mysql-test/r/ps.result:
  Test results updated: a test case for Bug#5510 "inserting Null in 
  AutoIncrement primary key Column Fails".
mysql-test/r/ps_2myisam.result:
  Bug#5510: a different warning in case of NULL->default truncation.This is 
  OK, the new warning is the same as produced by conventional execution.
mysql-test/r/ps_3innodb.result:
  Bug#5510: a different warning in case of NULL->default truncation.This is 
  OK, the new warning is the same as produced by conventional execution.
mysql-test/r/ps_4heap.result:
  Bug#5510: a different warning in case of NULL->default truncation.This is 
  OK, the new warning is the same as produced by conventional execution.
mysql-test/r/ps_5merge.result:
  Bug#5510: a different warning in case of NULL->default truncation.This is 
  OK, the new warning is the same as produced by conventional execution.
mysql-test/r/ps_6bdb.result:
  Bug#5510: a different warning in case of NULL->default truncation.This is 
  OK, the new warning is the same as produced by conventional execution.
mysql-test/t/ps.test:
  A test case for Bug#5510 "inserting Null in AutoIncrement primary key Column 
  Fails".
sql/item.cc:
  A fix for bug#5510 "inserting Null in AutoIncrement primary key Column 
  Fails": use proper Field API function for NULL placholeders.