Code review comment for lp:~epics-core/epics-base/ioc-shutdown

re-init crashes and errors are fixed (I think). Still leaking memory in dbReadCOM().

I've added a new test dbShutdownTest which does the complete startup and shutdown sequence twice. This is added in src/ioc/db/test despite the fact that it depends on src/std (ie base.dbd) because I'm too lazy to create src/std/test (or similar).