RFR(S): 8193434: [GRAAL] Graal classes are not loaded with -Xshare:dump

[Calvin Cheung]

bug: https://bugs.openjdk.java.net/browse/JDK-8193434

webrev: http://cr.openjdk.java.net/~ccheung/8193434/webrev.01/

java -Xshare:dump -Xlog:cds,cds+hashtables 
-XX:+UnlockDiagnosticVMOptions -XX:SharedArchiveFile=./test.jsa -Xbatch 
-XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI -XX:+UseJVMCICompiler 
-Djvmci.Compiler=graal

The above command causes the CNFE to be thrown in 
SystemDictionary::resolve_from_stream() during CDS dump time.
The proposed change is to add a _force_init_jvmci_runtime flag which is 
set at the beginning of JVMCIRuntime::force_initialization() and reset 
at the end of the initialization. The flag will be checked in 
SystemDictionary::resolve_from_stream() so that it will not throw CNFE 
during the eager initialization of JVMCI runtime during vm init.

The proposed change passed hs-tier1 through hs-tier3 testing on 
linux-x64, windows-x64, sparcv9, and Mac OS X.

thanks,
Calvin