[2.3.x] + (additional) fix issue #1705
https://java.net/jira/browse/GRIZZLY-1705
"CLStaticHttpHandler Chinese dir error"
[2.3.x] + (additional) fix issue #1706
https://java.net/jira/browse/GRIZZLY-1706
"Can't create junit test of Filter implementation because FilterChainContext class is final"