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

Calculating world dependencies   
*** Package in world file is not installed: kde-base/kde
 ...done!
[ebuild    U ] media-sound/alsa-utils-0.9.0_rc8-r1 [0.9.0_rc8] 
[ebuild    U ] sys-apps/file-3.41 [3.39] 
[ebuild    U ] net-print/hpijs-1.3.1 [1.3] 
[ebuild    U ] sys-apps/console-tools-0.3.2 [0.2.3-r4] 
[ebuild    U ] media-sound/alsa-driver-0.9.0_rc8-r1 [0.9.0_rc8]