better debug
Merge branch 'jetty-9.2.x' of ssh://git.eclipse.org/gitroot/jetty/org.eclipse.jetty.project into jetty-9.2.x
452261 - Multiple servlets map to path *.jsp when using jsp-property-group
452246 Fixed SSL hang on last chunk

Fixed WriteFlusher to distinguish between a flush that consumes all content and returns false, from one
that consumes all content and returns true.
If false is returned, the flusher needs to remain in pending so encrypted buffers can be flushed.
Merge remote-tracking branch 'origin/jetty-9.2.x'

Conflicts:
	jetty-io/src/main/java/org/eclipse/jetty/io/SelectChannelEndPoint.java
	jetty-webapp/src/main/java/org/eclipse/jetty/webapp/WebAppContext.java
fixed merge