Minor tweak for windows testcase expecting IllegalArgumentException
437462 - consistent test failure in jetty-start under windows

+ Fixing up logic to be more lenient for case insensitive nature of
  microsoft windows (it was tripping up over C:\ vs c:\ difference)
Adding AliasedConstraintTest for working out alias logic
435322 Fixed Iterating Callback close
updated AliasConstraintTest to expected results
438434 ResourceHandler checks aliases
Merge remote-tracking branch 'origin/master' into jetty-http2