Installa squid 2.5-STABLE4 dai sorgenti

./configure --prefix=/usr/lib/squid --sbindir=/usr/sbin --libexecdir=/usr/lib/squid --datadir=/usr/share/doc/squid-2.5.STABLE --libdir=/usr/lib/squid --sysconfdir=/etc/squid --enable-gnuregex --enable-delay-pools --enable-err-language=Italian --enable-kill-parent-hack --enable-linux-netfilter --enable-auth="basic ntlm" --enable-basic-auth-helpers="getpwnam LDAP MSNT multi-domain-NTLM SASL SMB winbind" --enable-ntlm-auth-helpers="SMB winbind" --enable-digest-auth-helpers="password" --enable-external-acl-helpers="ip_user ldap_group unix_group wbinfo_group winbind_group"