Invocation of a bootstrap method within the JVM can be simplified by having both indy and condy store details of which bootstrap method to invoke within a new BootstrapInfo data structure.

Also consider merging SystemDictionary::link_dynamic_constant and SystemDictionary::call_site_invoker into one method called SystemDictionary::invoke_bootstrap_method. invoke_bootstrap_method would query the BootstrapInfo data structure to obtain the bootstrap method details.