[project @ 2000-04-11 16:36:53 by sewardj]

[project @ 2000-04-11 16:36:53 by sewardj]
Ensure that when Hugs decides to unload a module (nukeModule()), there are
no closures anywhere in the system which refers to infotables defined
in that module.  That means reverting all CAFs and doing a major GC
prior to deleting the module.  A flag is used to avoid redundant GCs.