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

Calculating world dependencies    ...done!
[ebuild     U ] sys-apps/baselayout-1.8.10 [1.8.6.13] 
[ebuild     U ] dev-lang/swig-1.3.21 [1.3.19] 
[ebuild     U ] sys-libs/libcap-1.10-r3 [1.10] 
[ebuild     U ] net-misc/ntp-4.2.0-r2 [4.1.2] 
[ebuild     U ] sys-apps/portage-2.0.50-r6 [2.0.50-r5]