merge nginx changes between 1.2.5 and 1.2.6
change cpu affinity to 'off' as default
update cpu affinity log, so that nginx will write down 'cpuset_setaffinity' rather than 'sched_setaffinity' in freebsd
Merge pull request #177 from cfsego/merge

Merge changes between 1.2.5 and 1.2.6
merge CHANGES file between nginx 1.2.5 and 1.2.6
Merge pull request #179 from cfsego/merge

merge CHANGES file between nginx 1.2.5 and 1.2.6
fixed the compile problem in Solaris 11

fixed the different Makefile install format
fixed the different structure packed grammar
Merge pull request #182 from yaoweibin/fix_solairs

fixed the compile problem in Solaris 11
New feature: sysguard suppport memfree.
Merge pull request #184 from lifeibo/sysguard_memfree3

New feature: sysguard suppport memfree.
Add support for geoip regional database
Add the cleanup code for the region db connection
Merge pull request #185 from jasonlfunk/master

Add support for GeoIP Regional Database