Jetty 9 - undeploy(Archive) should recursively remove handlers.

[joakime]

The existing assumption from Issue #12 about server.getHandlers() is also true for undeploy(Archive).

Also, the removeHandler logic assumption is incorrect.

See StandardUndeployer.java for details.

[starksm64]

@joakime I assume we can delete all of these old issues?

[joakime]

The rules for handlers haven't changed in the past 15 years. I'll review these issues this week to see if they are still valid.

[joakime]

@starksm64 The arquillian core assumptions makes this difficult to implement.

[joakime]

The fixes in PR #17 only addresses a single deployed webapp, not multiple webapps, overlayed webapps, or nested webapps, or webapps behind other functionality (like gzip).

The points in issue #5 and #9 should be addressed, along with arquillian assumptions, for this to be fixed.