RFR [8u40] 8056084: Refactor Hashtable to allow implementations without rehashing support

[Mikael Gerdin]

Hi all,

I need to backport this change in order to backport 8048268 which we need for 
G1 performance in 8u40.

The patch didn't apply cleanly since StringTable was moved to a separate file 
in 9. The StringTable patch hunks applied correctly to the relevant parts of 
symbolTable.[ch]pp.


Webrev: http://cr.openjdk.java.net/~mgerdin/8056084/8u/webrev/

Bug: https://bugs.openjdk.java.net/browse/JDK-8056084

Review thread at:
http://mail.openjdk.java.net/pipermail/hotspot-dev/2014-August/015039.html

/Mikael