This patch collects all previous patches into one.

The main problem was due to that there is are two variables -
dflt_key_cache and sql_key_cache with have more or less duplicate
function. The reson for the bug was that the default value in the key
cache hash was set to dflt_key_cache, then sql_key_cache was set to a
new key cache object, and then dflt_key_cache was set to sql_key_cache
which was different from the dflt_key_cache_var. After sending SIGHUP,
the server was using the original default value for the key cache hash,
which was different from the actual key cache object used for the
default key cache.

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

  when using shm transporter, set sigmask on each thread using pthread_sigmask

into mysql.com:/home/jimw/my/mysql-4.1-clean

into sinisa.nasamreza.org:/mnt/work/mysql-4.1

into mysql.com:/home/jimw/my/mysql-4.1-clean

into mysql.com:/home/jimw/my/mysql-4.0-clean

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

prefix", which roots were fixed in 4.0 tree.

TIMESTAMP prefix" into 4.1 tree.

into mysql.com:/home/dlenev/src/mysql-4.0-bg7884

macros.

It does not fixes any bugs in 4.0. But it prevents from future error in
any bugfixes that may use these macros. Also after merging into 4.1 tree
this cleanup will fix bug #7884 "Able to add invalid unique index on
TIMESTAMP prefix".

not default_charset_into. It fixes the
problem that in some cases numbers where
treated as CHAR(N), not as BINARY(N), e.g.
wrong 'charsetnr' when sent to the client side.
2. IFNULL didn't aggregate argument charsets
and collations, so IFNULL(1,'a') produced
a CHAR(N). Now produces a BINARY(N).
3. SELECT PROCEDURE ANALIZE now returns
BINARY columns, which is much better than it worked
previously: CHAR with the default character set.
But in the future it's worth to fix the fields
'Field_name' and 'Optimal_fieldtype' to use UTF8,
and 'Min_value' and 'Max_value' to inherit their charsets
from the original items. But it is not important,
and BINARY(N) is OK for now.
4. Tests were fixed accordingly. No new tests were
made, as the old onces cover everything.

into mysql.com:/home/mysql_src/mysql-4.1-clean

into mysql.com:/space/my/mysql-4.0

into mysql.com:/space/my/mysql-4.1

into mysql.com:/home/mysql_src/mysql-4.1-clean

We should not overwrite res if it is returned from a const item.

set to a negative value. (Bug #7700)

into sanja.is.com.ua:/home/bell/mysql/bk/work-valgrind-4.1

Working around hang of master < 3.23.50 on SELECT @@unknown_var
(to enable 3.23.49->4.1.10 replication)

and the default character set is multi-byte, which will result in character
column size changes. (Bug #6913)

into bob.(none):/home/reggie/bk/mysql-4.1

sql_lex.cc:
  Set query to not cacheable if we are using multistatements and there are multiple statements in this query

into mysql.com:/space/my/mysql-4.1

into kite-hub.kitebird.com:/src/extern/MySQL/bk/mysql-4.1

into mysql.com:/space/my/mysql-4.1

into mysql.com:/space/my/mysql-4.1-build

into kite-hub.kitebird.com:/src/extern/MySQL/bk/mysql-4.1

  Mac OS X PKGs with Do-pkg