These are the packages that I would merge, in order:

Calculating dependencies    ...done!
[ebuild  N   ] sys-apps/sed-4.0.7  
[ebuild  N   ] sys-libs/zlib-1.1.4-r1  
[ebuild  N   ] dev-python/python-fchksum-1.6.1-r1  
[ebuild  N   ] sys-apps/bzip2-1.0.2-r2  
[ebuild  N   ] sys-apps/debianutils-1.16.7-r2  
[ebuild  N   ] sys-libs/ncurses-5.3-r2  
[ebuild  N   ] app-shells/bash-2.05b-r5  
[ebuild  N   ] sys-libs/readline-4.3-r4  
[ebuild  N   ] dev-util/dialog-0.9_beta20030308-r1  
[ebuild  N   ] sys-apps/grep-2.5.1-r1  
[ebuild  N   ] sys-apps/texinfo-4.5  
[ebuild  N   ] sys-apps/groff-1.18.1-r2  
[ebuild  N   ] sys-apps/cronbase-0.2.1-r2  
[ebuild  N   ] sys-apps/man-1.5l-r6  
[ebuild  N   ] sys-libs/gdbm-1.8.0-r5  
[ebuild  N   ] sys-devel/libperl-5.8.0  
[ebuild  N   ] dev-lang/perl-5.8.0-r11  
[ebuild  N   ] app-admin/gentoolkit-0.1.29  
[ebuild  N   ] dev-lang/tcl-8.4.3  
[ebuild  N   ] media-libs/libpng-1.2.5-r4  
[ebuild  N   ] sys-devel/flex-2.5.4a-r5  
[ebuild  N   ] x11-base/opengl-update-1.5  
[ebuild  N   ] sys-apps/gawk-3.1.2-r3  
[ebuild  N   ] sys-kernel/linux-headers-2.4.19  
[ebuild  N   ] sys-apps/baselayout-1.8.6.8-r1  
[ebuild  N   ] sys-devel/patch-2.5.9  
[ebuild  N   ] media-libs/freetype-2.1.4  
[ebuild  N   ] x11-misc/ttmkfdir-3.0.9  
[ebuild  N   ] dev-libs/expat-1.95.6-r1  
[ebuild  N   ] sys-devel/m4-1.4  
[ebuild  N   ] sys-devel/autoconf-2.57-r1  
[ebuild  N   ] sys-apps/miscfiles-1.3-r1  
[ebuild  N   ] sys-devel/gcc-config-1.3.3-r1  
[ebuild  N   ] sys-libs/cracklib-2.7-r7  
[ebuild  N   ] dev-libs/glib-1.2.10-r5  
[ebuild  N   ] sys-libs/pwdb-0.61-r4  
[ebuild  N   ] sys-devel/automake-1.7.5-r2  
[ebuild  N   ] sys-libs/pam-0.75-r11  
[ebuild  N   ] sys-apps/ed-0.2-r3  
[ebuild  N   ] media-libs/fontconfig-2.2.1  
[ebuild  N   ] app-arch/unzip-5.50-r1  
[ebuild  N   ] app-arch/cabextract-0.6  
[ebuild  N   ] x11-base/xfree-4.3.0-r3  
[ebuild  N   ] dev-lang/tk-8.4.3  
[ebuild  N   ] dev-lang/python-2.2.3  
[ebuild  N   ] sys-apps/portage-2.0.48-r1  
[ebuild  N   ] sys-devel/binutils-2.14.90.0.2  
[ebuild  N   ] sys-devel/gcc-3.2.3-r1  
[ebuild  N   ] sys-libs/glibc-2.3.2-r1  
[ebuild  N   ] sys-devel/libtool-1.4.3-r1  
[ebuild  N   ] sys-devel/gettext-0.11.5-r1  
[ebuild  N   ] app-text/gnome-spell-1.0.4