Constant pool caching of fields inhibited/delayed unnecessarily

Aurora is measuring a startup regression in 9-b129 on all platforms with all the startup apps in 9-b129. JVM displacement runs indicate that there are potentially both JDK and JVM sources of this regression. It's interesting that the Javac/Javadoc Startup benchmarks indicate their regression is in the JVM, but the Startup3 apps show both JVM and JDK sources. So there maybe be more than one issue involved here.

Since there's the potential for more than one regression here, it might be best if each regression opened a corresponding bug, and once those bugs are resolved this one can be considered resolved.