experimental support for aspects adapting base bundles without activation policy:
* record base bundles without activation policy (OTStorageHook->TransformerHook)
* when a class has been defined check if the bundle is adapted by any aspects needing activation
  - for this purpose TransformerHook is now a ClassLoadingStatsHook, too
  - only trigger activation if no class is currently being defined (detect by maintaining a stack)
(this was requested by tests wishing to adapt org.eclipse.jdt.core.tests.compiler)

3 files changed