Neither the JVMDI nor JVMTI spec nor implementation prohibited the redefinition
of core classes (java.* etc) however at several points in the code, core
classes are ignored. For example, dependencies are not stored in c2 and
constant pool and vtable fix ups are not applied to core classes.

There is a related problem in c2. Dependencies are only stored in development
time builds due to the use of the "HotSwap" variable. This variable must be
removed.