fix E_STRICT of debug

git-svn-id: http://slightphp.googlecode.com/svn/trunk@517 421ab7fd-e44e-0410-a24a-e5494ac5ce2e
fix samples

git-svn-id: http://slightphp.googlecode.com/svn/trunk@518 421ab7fd-e44e-0410-a24a-e5494ac5ce2e
取消多级zone（重要更新，容易混乱，只支持一级zone)

git-svn-id: http://slightphp.googlecode.com/svn/trunk@520 421ab7fd-e44e-0410-a24a-e5494ac5ce2e
samples

git-svn-id: http://slightphp.googlecode.com/svn/trunk@521 421ab7fd-e44e-0410-a24a-e5494ac5ce2e