RFR: JDK-8146299 - Disable rmic -Xnew

[Mark Sheppard]

Hi
  please oblige and review the following change:
http://cr.openjdk.java.net/~msheppar/8146299-II/webrev.03/
to address the issue:
https://bugs.openjdk.java.net/browse/JDK-8146299

which is to disables a currently undocumented, and unsupported feature 
in rmic

* the parsing of the commandline option -Xnew is commented out
* a set of tests are disabled using the @ignore tag
* the ProblemList.txt is amended accordingly

regards
Mark