To upstream fixes 130815

JettyBootStrap.java
-	Some of the test run are failing because ports are taken, don’t think the @Retry is working, seems overkill when a simple try/catch can be used

generateByaccs / yacc.exe / pom.xml
-	Now works under windows/Cygwin

NrtmConncurrencyTestIntegration.java
-	Failing intermittently. Fixed. 

WhoisServerHandler.java/ConnectionStateHandler.java
-	The writes need to be synchronous otherwise they can get dropped if channel.close() event occurs first

MailSenderStub.java
-	Getting ConcurrentModificationExceptions in some test runs