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

Calculating dependencies ... done!
Dependency resolution took 1.02 s (backtrack: 0/20).

[ebuild  N     ] media-libs/giflib-6.1.3:0/7::gentoo  USE="-doc -static-libs" 460 KiB
[ebuild  N     ] media-libs/libafterimage-1.20-r6::gentoo  USE="X gif jpeg nls png shaping tiff truetype -examples -shm -static-libs -svg" CPU_FLAGS_X86="mmx" 994 KiB

Total: 2 packages (2 new), Size of downloads: 1453 KiB