Changed mysql-test to use --language
Cleaned up parameters to filesort()


configure.in:
  Fixed typo
mysql-test/install_test_db.sh:
  Changed test case to use --language
mysql-test/mysql-test-run.sh:
  Changed test case to use --language
  Fixed that test names are not 'cut'-ed.
mysql-test/r/select_found.result:
  Fixed test case to make it repeatable
mysql-test/t/insert.test:
  Added test of unique key handling
mysql-test/t/order_fill_sortbuf.test:
  Cleaned up test
mysql-test/t/select_found.test:
  Fixed test case to make it repeatable
sql/filesort.cc:
  Fixed bug when sorting big files (introduced with multi-table-delete)
  cleaned up parameters.
sql/mysql_priv.h:
  Cleaned up parameters to filesort()
sql/mysqld.cc:
  Fixed typo on enum
sql/sql_delete.cc:
  Cleanup
sql/sql_select.cc:
  Cleanup
sql/sql_table.cc:
  Cleanup
sql/sql_test.cc:
  Cleanup
sql/sql_update.cc:
  Cleanup