This is an update I've been meaning to put in for a while, but Sheila reminded me of it this morning. The IMC_LOCK Guardian will now jump to 'FAULT' if it sees JAC is unlocked and wait there, much like it does if the PSL isn't ready.

To do this, I moved the 'JAC_LOCKED()' function from the JAC_LOCK node into ISC_library.py so that both the JAC and IMC nodes can use it and it would only need to be changed in one place, and I used the function in a decorator in the IMC_LOCK node (again, much like the PSL check). All changes loaded and committed to svn.