+;;; which was introduced in version 25, since now control stack
+;;; is checked using mmap() page protection
+;;; 31: (2002-08-14) changed encoding of PCL internal MAKE-INSTANCE
+;;; function names so they're insensitive to whether the class name
+;;; is currently external to its package
+;;; 32: (2002-09-21) changes in implementation of sequence functions,
+;;; causing old utility functions like COERCE-TO-SIMPLE-VECTOR to go away
+;;; 33: (2002-10-02) (again) changes in implementation of sequence functions,
+;;; causing old utility functions like COERCE-TO-SIMPLE-VECTOR to go away
+;;; 34: (2002-10-05) changed implementation of DEFMACRO, so %%DEFMACRO
+;;; was deleted
+;;; 35: (2002-11-27) (incremented version before 0.7.10 release,
+;;; reflecting changes from a week or more ago) changed layout of
+;;; CLOS objects to support SXHASH returning values other than 42
+;;; for STANDARD-OBJECT
+;;; 36: (2002-12-04) DEFSTRUCT-DESCRIPTION layout changed to accommodate
+;;; correct behaviour of colliding accessors
+;;; 37: (2002-12-09) changed implementation of DEFINE-COMPILER-MACRO,
+;;; deleting %%DEFINE-COMPILER-MACRO
+;;; 38: (2003-01-05) changed names of internal SORT machinery
+;;; 39: (2003-02-20) in 0.7.12.1 a slot was added to
+;;; DEFSTRUCT-SLOT-DESCRIPTION