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

Calculating dependencies ...done!
[ebuild  N    ] x11-libs/qt-3.3.6-r4  +cups -debug -doc -examples -firebird +gif -immqt -immqt-bc +ipv6 -mysql -nas -nis -odbc +opengl -postgres -sqlite -xinerama 0 kB 
[ebuild  N    ] kde-base/arts-3.5.5  +alsa -artswrappersuid -debug (-elibc_FreeBSD) +esd -jack -kdeenablefinal -kdehiddenvisibility +mp3 -nas +vorbis -xinerama 944 kB 
[ebuild  N    ] media-libs/libao-0.8.6-r3  +alsa +arts -doc +esd -mmap -nas -pulseaudio 381 kB 
[ebuild  N    ] x11-libs/startup-notification-0.8  230 kB 
[ebuild  N    ] gnome-base/gnome-common-2.12.0  -debug 58 kB 
[ebuild  N    ] net-libs/libsoup-2.2.97  -debug -doc +ssl -static 488 kB 
[ebuild  N    ] gnome-extra/evolution-data-server-1.8.1-r1  -debug -doc +ipv6 -kerberos -keyring -krb4 -ldap -nntp +ssl 6,952 kB 
[ebuild  N    ] app-text/gtkspell-2.0.11-r1  -doc 339 kB 
[ebuild  N    ] net-im/gaim-1.5.0  -cjk -debug +eds -gnutls -krb4 -nas +nls +perl -silc +spell +tcl +tk 5,979 kB 

Total size of downloads: 15,376 kB