Upgrades

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

Calculating world dependencies  .  ... done!
[ebuild  N    ] app-arch/lzma-utils-4.32.5  0 kB
[ebuild     U ] media-libs/libpng-1.2.26-r1 [1.2.25] 0 kB
[ebuild     U ] net-misc/rsync-2.6.9-r6 [2.6.9-r5] USE="acl -ipv6 -static -xinetd" 0 kB
[ebuild     U ] dev-libs/libxml2-2.6.31 [2.6.30-r1] USE="python readline -bootstrap -build -debug -doc -examples% -ipv6 -test" 0 kB
[ebuild     U ] sys-devel/m4-1.4.11 [1.4.10-r3] USE="nls -examples" 0 kB
[ebuild     U ] app-text/poppler-0.6.3 [0.6.1-r1] USE="zlib -cjk -jpeg" 0 kB
[ebuild     U ] sys-devel/automake-1.10.1 [1.10] 0 kB
[ebuild     U ] sys-apps/coreutils-6.10-r1 [6.9-r1] USE="acl nls (-selinux) -static -vanilla% -xattr" 0 kB
[blocks B     ] sys-apps/mktemp (is blocking sys-apps/coreutils-6.10-r1)
[blocks B     ] >=sys-apps/coreutils-6.10 (is blocking sys-apps/mktemp-1.5)

Total: 8 packages (7 upgrades, 1 new, 2 blocks), Size of downloads: 0 kB

Note the two blockers between mktemp and coreutils. The key here is that coreutils now includes a mktemp binary. It is sys-apps/mktemp that should be unmerged.