Post-merge fix: replace xid=* with XID to isolate from number of transactions

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/maint/jun14/50

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/maint/jun14/50

into  zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-5.0-maint

mysql-test/include/wait_for_slave_io_to_stop.inc
mysql-test/include/wait_for_slave_sql_to_stop.inc
mysql-test/include/wait_for_slave_to_start.inc
mysql-test/include/wait_for_slave_to_stop.inc
from 5.1

into  zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-5.0-maint

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/maint/jun14/50

into  trift2.:/MySQL/M50/push-5.0

into  trift2.:/MySQL/M41/push-4.1

into  trift2.:/MySQL/M50/push-5.0

In many cases, binaries can no longer dump core after calling setuid().

Where the PR_SET_DUMPABLE macro is set, use the prctl() system call 
to tell the kernel that it's allowed to dump the core of the server.

into  mysql.com:/d2/hf/mrg/mysql-5.0-opt

into  magare.gmz:/home/kgeorge/mysql/work/valgrind-errs-merge-5.0-opt

into  mysql.com:/d2/hf/mrg/mysql-5.0-opt

into  mysql.com:/d2/hf/mrg/mysql-4.1-opt

into  damien-katzs-computer.local:/Users/dkatz/50_win

Removed the ability to cache queries containing "UUID()".

into  pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-5.0-build

was erroneously converted to double, while the result of
ROUND(<decimal expr>, <int literal>) was preserved as decimal.
As a result of such a conversion the value of ROUND(D,A) could
differ from the value of ROUND(D,val(A)) if D was a decimal expression.

Now the result of the ROUND function is never converted to 
double if the first argument is decimal.  

into  pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-5.0-build

into  pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-4.1-build

into  pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-5.0-build

into  trift2.:/MySQL/M50/push-5.0

into  trift2.:/MySQL/M50/push-5.0

into  trift2.:/MySQL/M50/merge-5.0

into  trift2.:/MySQL/M41/push-4.1

    Improved check for thread identity in the "embedded" case,
    provided by Monty.
    
    This finishes the fixes for bug#27078.

into  pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-5.0-build

into  pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-5.0-build

into  pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-4.1

into  pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-5.0

into  pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-5.0

into  pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-5.0

into  pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-5.0-post-commit

into  pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-4.1