Clean up from Bar and Antony code review. Found an issue with the header file were it could end up corrupted.

into brian-akers-computer.local:/Users/brian/mysql/mysql-4.1

into mysql.com:/home/dlenev/src/mysql-4.1-bf

introduced during implementation of TIMESTAMP columns, which are able 
to store NULLs (Unfortunately it is impossible to write test case for
this. Kudos to Holyfoot for noticing it!)

into deer.(none):/home/hf/work/mysql-4.1.5730

  Fix typos in previous push

into hundin.mysql.fi:/home/heikki/mysql-4.1

into poseidon.ndb.mysql.com:/home/tomas/mysql-4.1

  Raise maximum column prefix len to 767 bytes, so that MySQL can create a column prefix index of 255 UTF-8 characters (each takes 3 bytes at the maximum); add comments about why innobase_get_at_most_n_mbchars() works ok
dict0mem.h:
  Raise maximum column prefix len to 767 bytes, so that MySQL can create a column prefix index of 255 UTF-8 characters (each takes 3 bytes at the maximum)
row0mysql.c:
  If MySQL tries to create a column prefix index longer that 255 UTF-8 characters, give an error, and drop the table from the InnoDB internal data dictionary. MySQL did not drop the table there in its own error handling.

into hundin.mysql.fi:/home/marko/j/mysql-4.1

into hundin.mysql.fi:/home/marko/j/mysql-4.1

removed staus flag

  Fix compiler warning

into mysql.com:/home/dlenev/src/mysql-4.1-ryan

into mysql.com:/M41/mysql-4.1

into mysql.com:/home/dlenev/src/mysql-4.1-ryan

into mysql.com:/home/dlenev/src/mysql-4.1-ryan

treated as DEFAULT NULL columns (independently from their position in
table).

(still to be discussed with Monty, Brian, Trudy et al. before push)

into poseidon.ndb.mysql.com:/home/tomas/mysql-4.1-ndb-merge

into poseidon.ndb.mysql.com:/home/tomas/mysql-4.1

bug #5872, transactions should only be restarted with transaction.on flag off if execute_commit has been performed
added testcase for this
use force send for all executes

with the system-reserved (and system-defined) '_REENTRANT' 
CPP identifier.
Especially, it must not be "undefine"d, because the Tru64 compiler
needs it if threads are enabled.

into poseidon.ndb.mysql.com:/home/tomas/mysql-4.1-ndb-merge

switch to using my_ for heap allocations

  ctype_recode does not hang anymore. Small fix after Marko's change.