These are the packages that would be merged, in order:

Calculating world dependencies... done!
[ebuild     U ] app-misc/ca-certificates-20061027.2 [20050804] 92 kB 
[ebuild  N    ] dev-libs/libksba-0.9.15  481 kB 
[ebuild  NS   ] app-crypt/gnupg-1.9.21  USE="X nls -gpg2-experimental -ldap (-selinux) -smartcard" 1,858 kB 
[ebuild  N    ] media-plugins/gst-plugins-alsa-0.10.11  0 kB 
[ebuild  N    ] media-plugins/gst-plugins-oss-0.10.3  0 kB 
[ebuild  N    ] media-plugins/gst-plugins-x-0.10.11  0 kB 
[ebuild   R   ] net-misc/vino-2.16.0-r1  USE="avahi* crypt jpeg zlib -debug -gnutls" 0 kB