namecache stage-2 patch for testing

[David Rhodus]

Testing of NAMEI2.DIFF with compares of without.
All of the testing without used kernel as of Sep 24.
The testing was performed in this order on both occasions.
-DR

===
* (Test 1)
[With Patch]
time tar zxvf ports.tar.gz
5.169u 16.852s 3:02.37 12.0%    320+347k 554+146io 11pf+0w
[Without]
time tar zxvf ports.tar.gz
4.994u 16.135s 3:04.47 11.4%    319+347k 553+146io 11pf+0w
===
* (Test 2)
[With Patch]
time ls -lR /usr/src > /dev/null
0.898u 2.044s 0:11.01 26.6%     349+526k 6966+0io 0pf+0w
[Without]
time ls -lR /usr/src > /dev/null
0.820u 1.562s 0:07.99 29.7%     348+550k 2734+0io 0pf+0w
===
* (Test 3)
[With Patch]
time rm -rf /usr/test/ports
0.429u 8.163s 1:02.99 13.6%     199+400k 14427+0io 0pf+0w
[Without]
time rm -rf /usr/test/ports
0.374u 4.055s 0:50.46 8.7%      200+394k 14427+0io 0pf+0w
Lots of this during this process while using the patch, ex.

a# dmesg -a
[CUT FOR LENGHT]
ng 'gtk-engines2'
cache_enter: parent has no namecache entry entering 'wm2'
cache_enter: parent has no namecache entry entering 'wm2'
cache_enter: parent has no namecache entry entering 'wmDeskGuide'
cache_enter: parent has no namecache entry entering 'wmDeskGuide'
cache_enter: parent has no namecache entry entering 'wmakerconf'
cache_enter: parent has no namecache entry entering 'wmakerconf'
cache_enter: parent has no namecache entry entering 'wmanager'
cache_enter: parent has no namecache entry entering 'wmanager'
cache_enter: parent has no namecache entry entering 'wmg'
cache_enter: parent has no namecache entry entering 'wmg'
cache_enter: parent has no namecache entry entering 'wmthemeinstall'
cache_enter: parent has no namecache entry entering 'wmthemeinstall'
cache_enter: parent has no namecache entry entering 'wmx'
cache_enter: parent has no namecache entry entering 'wmx'
cache_enter: parent has no namecache entry entering 'scripts'
cache_enter: parent has no namecache entry entering 'scripts'
cache_enter: parent has no namecache entry entering 'xfce'
cache_enter: parent has no namecache entry entering 'xfce'
cache_enter: parent has no namecache entry entering 'xfce4'
cache_enter: parent has no namecache entry entering 'xfce4'
cache_enter: parent has no namecache entry entering 'xfce4-desktop'
cache_enter: parent has no namecache entry entering 'xfce4-desktop'
cache_enter: parent has no namecache entry entering 'xfce4-panel'
cache_enter: parent has no namecache entry entering 'xfce4-panel'
cache_enter: parent has no namecache entry entering 'xfce4-systray'
cache_enter: parent has no namecache entry entering 'xfce4-systray'
cache_enter: parent has no namecache entry entering 'xfce4-wm'
cache_enter: parent has no namecache entry entering 'xfce4-wm'
cache_enter: parent has no namecache entry entering 'xwmm'
cache_enter: parent has no namecache entry entering 'xwmm'
cache_enter: parent has no namecache entry entering 'yawm'
cache_enter: parent has no namecache entry entering 'yawm'
===