More robust Makefile architecture. Introduction of a Makefile.conf.
Sandbox added, as a program to test libbdd (generates /bin/test).
Compatibility with gcc 4.7.2-5 (current version of the Debian Sid) :
specialisation of std::hash placed within a template.
Compatibility with clang < 3.1 which lacks the support for C++11
anonymous functions. Use of standard C++98 std::functional object
instead.
Script display.sh to obtain *.png from *.dot.