WL#4802: Apply Google SMP patches to Server

MySQL 5.4.0:
To improve MySQL Server scalability, apply the Google patches from the 
launchpad tree 5.1-patches maintained by Mark Callaghan:
http://code.google.com/p/google-mysql-tools/wiki/SmpPerformance

Applied to MySQL 5.4.0.

Community contribution; for details, follow the link to launchpad:
http://code.google.com/p/google-mysql-tools/wiki/SmpPerformance
and the MySQL 5.4.0 description:
https://clustra.norway.sun.com/twiki/bin/view/DatabasesAtSun/MySQLServer51PPHome#Summit_v0_2_Features

Community contribution; no further LLD needed.