RFR(L) 8205824: Update Graal

[Tom Rodriguez]

https://bugs.openjdk.java.net/browse/JDK-8205824
http://cr.openjdk.java.net/~never/8205824/webrev/index.html

This combines a general Graal update with the fix for 
https://bugs.openjdk.java.net/browse/JDK-8204855.  This general Graal 
update also fixes JDK-8204914 and includes a few other fixes from Graal. 
  Unfortunately the webrev is fairly noisy because of blank lines 
inserted because of copyright adjustment and the addition of @Override 
annotations in JVMCI.

8204855 is a set of changes to the JVMCI API which are required to 
support the libgraal effort.  Primarily this is about making a strong 
distinction between runtime and compiler objects and state and hiding 
anything which lets you bridge that boundary without be careful.  Mostly 
it doesn't change the way JVMCI works apart from some changes to the 
HotSpotSpeculationLog implementation and the associated changes in 
Graal.  These changes are binary incompatible with previous versions of 
JVMCI.  Given the limitations of webrev I can't easily provide a webrev 
which shows just this change.

The bits were tested with mach5 
builds-tier1,jdk-tier1,hs-tier1,hs-tier2,hs-tier3,hs-tier4-graal,hs-tier5-graal 
and hs-tier6-graal.  The details are in the bug report.

I'm happy to explain anything about changes the JVMCI and why they were 
required.  The JVMCI API updates have been tested with JDK8 Graal and 
will land in the next few days.

tom