RFR(M) 8072383: resolve conflicts between open and closed ports

[Dean Long]

These changes resolve some issues with references to closed ports in 
open hotspot code,
primarily by removing those references completely.  I have included the 
8u60 backport
as well because it won't apply cleanly, and I may push it first because 
the 9 changes are
blocked by JEP 237: Linux/AArch64 Port.

http://cr.openjdk.java.net/~dlong/8072383/webrev.8u60.00/
http://cr.openjdk.java.net/~dlong/8072383/webrev.9.00/

dl