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

Calculating world dependencies    ...done!
[ebuild    U ] gnome-base/nautilus-2.2.1 [2.2.0.2] 
[ebuild    U ] media-gfx/imagemagick-5.5.3.2 [5.4.9.1-r2] 
[ebuild    U ] app-shells/tcsh-6.12-r2 [6.12-r1]