The previous ebuild had a small error which misses an include file with USE=-X. This does not actually affect gkrellm itself, but compilation of some plugins (x11-plugins/gkrelltop specifically) with USE=-X. I have not waited the usual 30 days since this revbump simply adds the appropriate include file under this USE flag condition.
ppc stable
ppc64 done
amd64/x86 stable
alpha/arm/ia64/sparc stable
Stable for HPPA and closing.