Log Message:
Import creduce-2.1.0nb20140906 as wip/creduce-git.

C-Reduce is a tool that takes a large C or C++ program that has a
property of interest (such as triggering a compiler bug) and
automatically produces a much smaller C/C++ program that has the
same property.  It is intended for use by people who discover and
report bugs in compilers and other tools that process C/C++ code.