Fixed problem with NULL and derived tables (Bug #4097)
Cleanup of new pushed code


BitKeeper/etc/ignore:
  added mysql-test/ndb/ndbcluster
client/mysqltest.c:
  simple cleanup
innobase/os/os0file.c:
  fix for netware
libmysql/libmysql.c:
  Fixed some byte order bugs with prepared statements on machines with
  high-byte-first. (Bug #4173)
myisam/ft_boolean_search.c:
  Comment cleanup
myisam/mi_check.c:
  Removed not needed check (check is done in check_index())
myisam/mi_unique.c:
  crc must be of type ha_checksum.
myisam/myisamchk.c:
  Portability fix.
mysql-test/mysql-test-run.sh:
  Simple cleanup
mysql-test/r/subselect.result:
  Test problem with NULL and derived tables (Bug #4097)
mysql-test/t/subselect.test:
  Test problem with NULL and derived tables (Bug #4097)
sql/mysqld.cc:
  Remove not used defines
sql/sql_select.cc:
  Fixed problem with NULL and derived tables (Bug #4097)
  Indentation fixes
sql/sql_string.cc:
  Code cleanup
sql/sql_yacc.yy:
  Allow one to use DROP PREPARE ...