objects that can be seen by the GC.
* bug fix: defaulting of values in contexts expecting more than 7
variables now works on x86-64. (reported by Christopher Laux)
+ * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
+ thread safe.
changes in sbcl-1.0.7 relative to sbcl-1.0.6:
* MOP improvement: support for user-defined subclasses of