into  zippy.cornsilk.net:/home/cmiller/work/mysql/bug22555/my51-bug22555

When only one row was present, the subtraction of nearly the same number 
resulted in catastropic cancellation, introducing an error in the 
VARIANCE calculation near 1e-15.  That was sqrt()ed to get STDDEV, the 
error was escallated to near 1e-8.  

The simple fix of testing for a row count of 1 and forcing that to yield 
0.0 is insufficient, as two rows of the same value should also have a
variance of 0.0, yet the error would be about the same.

So, this patch changes the formula that computes the VARIANCE to be one
that is not subject to catastrophic cancellation.

In addition, it now uses only (faster-than-decimal) floating point numbers
to calculate, and renders that to other types on demand.

into  zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-5.1-maint

into  zippy.cornsilk.net:/home/cmiller/work/mysql/bug22860/my51-bug22860

into  zippy.cornsilk.net:/home/cmiller/work/mysql/bug22860/my50-bug22860

Support says that memlock doesn't work on OSes other than Solaris.  
Add a warning about --memlock to the crash monologue.

into  rolltop.ignatz42.dyndns.org:/mnt/storeage/mtr_winfix/my51-mtr_winfix

into  rolltop.ignatz42.dyndns.org:/mnt/storeage/mtr_winfix/my50-mtr_winfix

Test Suite failing on Windows because the $opt_report_features variable was not defined before use. 

into  zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-5.1-maint

into  zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-5.1-maint

into  zippy.cornsilk.net:/home/cmiller/work/mysql/bug20691/my51-bug20691

into  ted.mysql.internal:/home/ted/src/mysql/mysql-5.1-new-maint

	specifying DEFAULT

This was not specific to datetime.  When there is no default value 
for a column, and the user inserted DEFAULT, we would write 
uninitialized memory to the table.  

Now, insist on writing a default value, a zero-ish value, the same 
one that comes from inserting NULL into a not-NULL field.

(This is, at best, really strange behavior that comes from allowing 
sloppy usage, and serves as a good reason always to run one's server 
in a strict SQL mode.)

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/inno/51

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/inno/51

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/inno/50

Fixes:
- Bug #24089: Race condition in fil_flush_file_spaces()

Fixes:
- Bug #15815: Very poor performance with multiple queries running concurrently
- Bug #22868: 'Thread thrashing' with > 50 concurrent conns under an upd-intensive workloadw
- Bug #23769: Debug assertion failure with innodb_locks_unsafe_for_binlog
- Bug #24089: Race condition in fil_flush_file_spaces()

Fixes:
- Bug #15815: Very poor performance with multiple queries running concurrently
- Bug #22868: 'Thread thrashing' with > 50 concurrent conns under an upd-intensive workloadw
- Bug #24089: Race condition in fil_flush_file_spaces()

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/51

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/50

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/41

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/51

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/51

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/50

into  neptunus.(none):/home/msvensson/mysql/mysql-5.1-new-maint

into  neptunus.(none):/home/msvensson/mysql/mysql-5.1-new-maint

into  neptunus.(none):/home/msvensson/mysql/mysql-5.0-maint

into  neptunus.(none):/home/msvensson/mysql/mysql-5.1-new-maint

into  neptunus.(none):/home/msvensson/mysql/mysql-5.0-maint

into  neptunus.(none):/home/msvensson/mysql/mysql-5.0-maint

Pass location of charsets dir to mysqltest to avoid using the charsetdir locally installed on machine. 

into  alik.:/mnt/raid/alik/MySQL/devel/5.1-rt

into  zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-5.1-maint