mysql-test/r/alter_table.result:
  Fixed results after merge
sql/handler.cc:
  Trivial optimzation
sql/sql_table.cc:
  Trvial optimization
sql/sql_yacc.yy:
  After merge fix
sql/unireg.cc:
  Removed argument 'null_fields' from make_empty_rec() as it was not needed
  Moved assert() to right place to take bit fields into account