+?? The system now defines its address space constants in one place
+ (in the Lisp sources), and propagates them automatically elsewhere
+ (through GENESIS and the sbcl.h file). Therefore, patching the
+ address map is less unnecessarily tedious and error-prone. The
+ Lisp names of address space constants have also been systematized.
+?? dollar-Header-dollar and other CVS magic tags have been removed
+ from the sources, because they have never saved me trouble and
+ they've been a nuisance working with patches and other
+ diff-related operations.