* Initial libmagic implementation, adapted from Eitan Adler <eitanadlerlist@gmail.com>.
New nanorc entry "magic" to enable this functionality, nanorc file and man page updates.
git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@4528 35c25a1d-7b9e-4130-9fde-d3aeb78583b8