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

Calculating dependencies ...done!
[ebuild   R   ] net-libs/libwww-5.4.0-r3  +mysql +ssl 0 kB
[ebuild   R   ] dev-php/mod_php-4.4.0-r3  +X +apache2 +berkdb +crypt -curl -debug -doc -fdftk -firebird -flash -freetds -gd -gd-external +gdbm -gmp -hardenedphp -imap -informix -ipv6 -java +jpeg -kerberos -ldap -mcal -memlimit -mssql +mysql +nls -oci8 -odbc +pam +png -postgres -snmp +spell +ssl +tiff +truetype +xml2 -yaz 0 kB
[ebuild   R   ] dev-php/php-4.4.0-r1  +X +berkdb +crypt -curl -debug -doc -fdftk -firebird -flash -freetds -gd -gd-external +gdbm -gmp -hardenedphp -imap -informix -ipv6 -java +jpeg -kerberos -ldap -mcal -memlimit -mssql +mysql +ncurses +nls -oci8 -odbc +pam +png -postgres +readline -snmp +spell +ssl +tiff +truetype +xml2 -yaz 0 kB
[ebuild  NS   ] x11-libs/gtk+-1.2.10-r11  -debug +nls 0 kB
[ebuild  N    ] media-sound/xmms-1.2.10-r15  -3dnow +alsa -arts -directfb -esd +flac -jack +lirc +mad +mikmod +mmx +mp3 +nls +oss -sndfile +vorbis 0 kB
[ebuild   R   ] media-plugins/xmms-lirc-1.4  0 kB
[ebuild  N    ] media-plugins/xmms-mpg123-1.2.10-r1  -3dnow -ipv6 +mmx +ssl 0 kB
[ebuild  N    ] media-plugins/xmms-oss-1.2.10-r2  0 kB
[ebuild  N    ] media-plugins/xmms-alsa-1.2.10-r3  0 kB
[ebuild  N    ] media-plugins/xmms-vorbis-1.2.10-r1  -ipv6 +ssl 0 kB
[ebuild  N    ] media-plugins/xmms-mad-0.8  0 kB
[ebuild   R   ] media-plugins/xmms-mikmod-1.2.10  0 kB