Replace use of obsolete macro DEFINE-BUILT-IN-CLASS by use of DEFCLASS.
Replace use of obsolete macro DEFINE-BUILT-IN-CLASS by use of DEFCLASS.

clasp-developers/SICL,clasp-developers/SICL,vtomole/SICL,clasp-developers/SICL,clasp-developers/SICL,vtomole/SICL,vtomole/SICL,vtomole/SICL