Log Message:
Update ECL to version 11.1.1.
Requested by Matthew Mondor, who contributed description of changes.

Since 10.4.1, changes were made in the following areas:

- Better cross-compile support, including with C++ compilers
- FFI from interpreted code now requires libffi
- Compiler now shipped as a single FASL file, cmp.fas

- Various fixes, notably in handling of:
  LIST/LIST*, foreign arrays and structures, optimization annotations,
  pathnames (logical pathnames and case), RENAME-FILE, READ,
  the debugger, ANSI CL function declarations, DECLAIM, DEFMACRO,
  EXPT, ASDF, rational math

- Performance optimizations in the following areas:
  SETF expansions, AREF/ASET, unboxing, sequence functions, LOOP,
  ASSERT, use of long-long and long-double where possible,
  reworked compilation policies, EXT:MAKE-FOREIGN-DATA-FROM-ARRAY
- Other new features:
  EXT:WITH-BACKEND

See http://ecls.cvs.sourceforge.net/viewvc/ecls/ecl/src/CHANGELOG?revision=1.793
for more details, or src/CHANGELOG in the source.