Lockmeter port available

As part of my testing of the fastwalk patch I ported the lockmeter patch that John Hawkes wrote to 2.4.21-rc8. This patch now applied cleanly, there were minimal merge conflicts I fixed for the i386 arch. This allows you to see which functions are contending for which locks, among other great things.

Available on Sourceforge at:

http://osdn.dl.sourceforge.net/sourceforge/lse/lockmeter1.5-2.4.21-rc8.diff

Hanna