Log Message:
Update to ECL 12.12.1

Changes since last release
==========================

Some highlights of this release are:

* Lots of bugs fixed.

* The MOP has been fixed to work with the upcoming release of
  Closer-MOP

* ECL now produces a much more readable C code, with indentation and
  more explicit declarations of variables.

Known issues
============

* Cygwin's library is still broken: fork/exec fails to reload the
  cygwin library, or ECL's compiled libraries in a completely random
  fashion. For this reason we recommend using ext:system instead of
  ext:run-program in that platform.

* In Windows ECL comes with bytecodes compiler by default, because C
  compilers are normally not avaiable. Unfortunately several
  libraries out there are not prepared for this. If you plan to use
  quicklisp and have a C compiler accessible to ECL, you may use
  (ext:install-c-compiler) to switch back to the Lisp-to-C compiler.