chdir to APP_PATH in shutdown
chdir to APP_PATH in shutdown

fixes problem if Kwf_Benchmark wants to access config cache and it can't as it's cwd is /.
Stupid Php.

yacon/koala-framework,Ben-Ho/koala-framework,nsams/koala-framework,yacon/koala-framework,Sogl/koala-framework,yacon/koala-framework,kaufmo/koala-framework,nsams/koala-framework,kaufmo/koala-framework,koala-framework/koala-framework,kaufmo/koala-framework,Ben-Ho/koala-framework,koala-framework/koala-framework,Sogl/koala-framework,nsams/koala-framework