Add support for VARCHAR with 1 or 2 length bytes
Enable VARCHAR packing in MyISAM files (previous patch didn't pack data properly)
Give error if we got problems in temporary tables during a SELECT
Don't use new table generated by ALTER TABLE if index generation fails
Fixed wrong call by range_end() (Could cause an ASSERT in debug mode)

Added comments (from code review on pull)

into mysql.com:/home/my/mysql-5.0

into gluh.mysql.r18.ru:/home/gluh/MySQL/mysql-5.0.n

into hundin.mysql.fi:/home/marko/j/mysql-5.0

operations.

mysqldump skips information_schema db
'use' now can use information_schema db
changed value of column 'Null' to 'NO' if column is not nullable

into mysql.com:/home/my/mysql-5.0

  explicit setting of reconnect (no behaviour change)

into mysql.com:/home/mysql_src/mysql-5.0-clean

into mysql.com:/home/mysql_src/mysql-5.0-clean

into hundin.mysql.fi:/home/marko/j/mysql-5.0

All our programs which use mysql_real_connect() and mysql_connect() are updated accordingly, though I have deliberately
made mysqlimport not reconnect anymore (already true for mysqldump >= 4.1.8).
All Connector devs have been warned about the change I'm doing here - which was agreed with Monty,
and fixes BUG#2555.

memory heaps.  This changeset plugs also a few memory leaks that
were introduced with the compact InnoDB table format.

into mysql.com:/home/my/mysql-5.0

into mysql.com:/home/cps/mysql/devel/im/mysql-5.0-im

into mysql.com:/home/my/mysql-5.0

into mysql.com:/home/mydev/mysql-5.0-5000

When the joins were not cleaned up before the tables
were closed, a JOIN_TAB still held a pointer to a
meanwhile closed table and tried to close it again
during item cleanup...

record format without requiring the doubly linked list added by
Heikki in ChangeSet@1.1627.16.2

  Remove parameter from call to btr_search_validate().
buf0buf.c:
  Initialize member "index" of buf_block_t.
buf0buf.h:
  Add member "index" to buf_block_t.
btr0sea.h:
  Remove parameter of btr_search_validate()
btr0sea.c:
  Make use of the added member "index" of buf_block_t.

- CREATE TABLE t1 SELECT BINARY 'literal'
  now creates a VARBINARY() column, not a BINARY().

into mysql.com:/home/my/mysql-5.0

Fixed compiler warnings
String results in CREATE ... SELECT are now created as CHAR(0), VARCHAR(X) or TEXT() depending on item->max_length

into mysql.com:/home/my/mysql-5.0

Fixed compiler warnings
Fix core dump when sending SIGHUP to mysqld

into serg.mylan:/usr/home/serg/Abk/mysql-5.0

    handle test_ro(".999", 0, HALF_UP, "1");