[9] RFR(S): 8035946: Use ResourceHashtable for dependency checking

[Albert]

Hi,

I send this to hotspot-dev, since the change contains a small 
modification in
resourceHash.hpp

Bug:
https://bugs.openjdk.java.net/browse/JDK-8035946

Problem:
JDK-8034839 introduced a new hashtable for caching checked dependencies. 
However, a hashtable that already existed prior to JDK-8034839 
(ResourceHashtable) could have been used instead of introducing the new one.

Solution:
Use ResourceHashtable and remove the new hashtable that was introduced 
with JDK-8034839.

Testing:
jprt, failing test

webrev:
http://cr.openjdk.java.net/~anoll/8035946/webrev.00/

Many thanks in advance,
Albert