Added a Gentoo 3.3.8 i686 64-bit box

This box was built from `install-x86-minimal-20120710.iso` and `stage3-i686-20120710.tar.bz2`.

I added this because the other one seems too old and waste too much time to `emerge --sync`. 

Hope it helps :)

Packages in box as below:

> vagrant@vagrant ~ $ equery --quiet list *
> app-admin/eselect-1.3.1
> app-admin/eselect-ctags-1.14
> app-admin/eselect-python-20100321
> app-admin/eselect-ruby-20100603
> app-admin/eselect-vi-1.1.7-r1
> app-admin/perl-cleaner-2.7
> app-admin/puppet-2.7.18
> app-admin/python-updater-0.10
> app-admin/sudo-1.8.5_p2
> app-arch/bzip2-1.0.6-r3
> app-arch/cpio-2.11
> app-arch/gzip-1.4
> app-arch/tar-1.26
> app-arch/xz-utils-5.0.3
> app-editors/nano-2.3.1-r1
> app-editors/vim-7.3.409
> app-editors/vim-core-7.3.409
> app-emulation/virtualbox-guest-additions-4.1.12
> app-misc/ca-certificates-20111025
> app-misc/editor-wrapper-4
> app-misc/mime-types-8
> app-misc/pax-utils-0.4
> app-misc/realpath-1.16
> app-portage/eix-0.25.5
> app-portage/gentoolkit-0.3.0.6-r3
> app-shells/bash-4.2_p20
> app-shells/bash-completion-1.3
> app-shells/gentoo-bashcomp-20101217
> app-shells/push-1.5
> app-vim/gentoo-syntax-20120109
> dev-lang/perl-5.12.4-r1
> dev-lang/python-2.7.3-r2
> dev-lang/ruby-1.8.7_p357
> dev-lang/ruby-1.9.3_p194-r1
> dev-lang/yasm-1.2.0
> dev-libs/expat-2.1.0
> dev-libs/glib-2.30.3
> dev-libs/gmp-5.0.2_p1
> dev-libs/libffi-3.0.11
> dev-libs/libpcre-8.30-r2
> dev-libs/libxml2-2.8.0_rc1
> dev-libs/libyaml-0.1.4
> dev-libs/mpc-0.8.2
> dev-libs/mpfr-3.0.1_p4
> dev-libs/openssl-1.0.0j
> dev-libs/popt-1.16-r1
> dev-perl/Locale-gettext-1.50.0
> dev-perl/XML-Parser-2.410.0
> dev-python/argparse-1.2.1
> dev-python/setuptools-0.6.21
> dev-ruby/facter-1.6.0
> dev-ruby/json-1.6.7
> dev-ruby/racc-1.4.6-r1
> dev-ruby/rake-0.8.7-r6
> dev-ruby/rdoc-3.12
> dev-ruby/rubygems-1.8.24
> dev-util/ctags-5.8
> dev-util/gperf-3.0.4
> dev-util/gtk-doc-am-1.18
> dev-util/intltool-0.50.2
> dev-util/kbuild-0.1.9998_pre20110817
> dev-util/pkgconfig-0.27
> dev-util/ragel-6.7-r1
> mail-mta/ssmtp-2.64-r2
> net-mail/mailbase-1
> net-misc/dhcpcd-5.2.12
> net-misc/iputils-20101006-r2
> net-misc/openssh-5.9_p1-r4
> net-misc/rsync-3.0.9
> net-misc/wget-1.13.4-r1
> sys-apps/acl-2.2.51
> sys-apps/attr-2.4.46-r1
> sys-apps/baselayout-2.1-r1
> sys-apps/busybox-1.20.1
> sys-apps/coreutils-8.14
> sys-apps/debianutils-3.4.4
> sys-apps/diffutils-3.0
> sys-apps/file-5.09
> sys-apps/findutils-4.4.2-r1
> sys-apps/gawk-4.0.0
> sys-apps/grep-2.9
> sys-apps/groff-1.21
> sys-apps/help2man-1.40.11
> sys-apps/kbd-1.15.3
> sys-apps/less-444
> sys-apps/man-1.6g
> sys-apps/man-pages-3.40
> sys-apps/man-pages-posix-2003a
> sys-apps/miscfiles-1.5-r1
> sys-apps/module-init-tools-3.16-r1
> sys-apps/net-tools-1.60_p20110409135728
> sys-apps/openrc-0.9.8.4
> sys-apps/portage-2.1.11.9
> sys-apps/sandbox-2.5
> sys-apps/sed-4.2.1
> sys-apps/shadow-4.1.4.3
> sys-apps/sysvinit-2.88-r3
> sys-apps/tcp-wrappers-7.6-r8
> sys-apps/texinfo-4.13
> sys-apps/util-linux-2.20.1-r2
> sys-apps/which-2.20
> sys-auth/pambase-20101024-r2
> sys-boot/grub-0.97-r12
> sys-devel/autoconf-2.68
> sys-devel/autoconf-wrapper-12
> sys-devel/automake-1.9.6-r3
> sys-devel/automake-1.11.6
> sys-devel/automake-wrapper-7
> sys-devel/bin86-0.16.17
> sys-devel/binutils-2.21.1-r1
> sys-devel/binutils-config-3-r3
> sys-devel/bison-2.4.3
> sys-devel/dev86-0.16.18
> sys-devel/flex-2.5.35_p10
> sys-devel/gcc-4.5.3-r2
> sys-devel/gcc-config-1.6
> sys-devel/gettext-0.18.1.1-r1
> sys-devel/gnuconfig-20120116
> sys-devel/libperl-5.10.1
> sys-devel/libtool-2.4-r1
> sys-devel/m4-1.4.16
> sys-devel/make-3.82-r1
> sys-devel/patch-2.6.1
> sys-fs/e2fsprogs-1.42
> sys-fs/udev-171-r6
> sys-fs/zerofree-1.0.1
> sys-kernel/genkernel-3.4.24_p2
> sys-kernel/gentoo-sources-3.3.8
> sys-kernel/linux-headers-3.1
> sys-libs/cracklib-2.8.16
> sys-libs/db-4.8.30
> sys-libs/e2fsprogs-libs-1.42
> sys-libs/gdbm-1.8.3-r4
> sys-libs/glibc-2.14.1-r3
> sys-libs/gpm-1.20.6
> sys-libs/ncurses-5.9-r2
> sys-libs/pam-1.1.5
> sys-libs/readline-6.2_p1
> sys-libs/timezone-data-2012c
> sys-libs/zlib-1.2.5.1-r2
> sys-power/iasl-20090123
> sys-process/procps-3.2.8_p11
> sys-process/psmisc-22.16
> virtual/acl-0-r1
> virtual/dev-manager-0
> virtual/editor-0
> virtual/init-0
> virtual/libc-0
> virtual/libffi-0
> virtual/libiconv-0
> virtual/libintl-0
> virtual/linux-sources-0
> virtual/man-0
> virtual/modutils-0
> virtual/mta-0
> virtual/os-headers-0
> virtual/package-manager-0
> virtual/pager-0
> virtual/pam-0
> virtual/pkgconfig-0
> virtual/ruby-ssl-0
> virtual/rubygems-1
> virtual/rubygems-4
> virtual/shadow-0
> virtual/ssh-0
> virtual/yacc-0
> x11-misc/shared-mime-info-1.0
> x11-proto/xproto-7.0.23-r1

Cheers