Autoconfed source distribution

Use a general framework to configure packages.

 % ftp ftp.gnu.org
 > cd /gnu
 > bin
 > get grep-2.4.tar.gz
 > quit
 % gunzip grep-2.4.tar.gzx
 % tar cf grep-2.4
 % cd grep-2.4
 % ./configure --prefix=/usr
 % make
 % make install