RFR(M) JDK-8218994: Consolidate indy and condy JVM information within a BootstrapInfo data structure

[Lois Foltan]

Please review this change to consolidate indy and condy JVM information 
to invoke a bootstrap method into a new BootstrapInfo data structure as 
well as merge the condy and indy methods to invoke the bootstrap within 
SystemDictionary.

open webrev at: http://cr.openjdk.java.net/~lfoltan/bug_jdk8218994.0/webrev/
bug link: https://bugs.openjdk.java.net/browse/JDK-8218994
co-contributors: Lois Foltan & John Rose

Testing: hs-tier1-3 & jdk-tier1-3 (all platforms), hs-tier4-8 (linux 
only), JCK vm & lang

Thanks,
Lois