Ebuilds for kdebase and kdelibs 3.5.8, 3.5.9 are missing Lubos Lunak's KDE "xinerama improvements" patch http://ktown.kde.org/~seli/xinerama/ Earlier ebuilds seemed to use this patch, as functionality described on the webpage above stopped working after upgrading from 3.5.6 or 3.5.7 (don't remember). Lunak's corresponding qt3 patch still appears to be applied by qt3 ebuilds, but I think it's pointless if kdebase and kdelibs aren't similarly patched.
related bugs: Lunak's post https://bugs.kde.org/show_bug.cgi?id=86865 A bug that probably prompted inclusion of Lunak's patches http://bugs.gentoo.org/show_bug.cgi?id=175180 The problem now is that with newer unpatched kde versions it's impossible to get the described behavior that many people with xinerama and "focus follows mouse" policy may want.
Found out that the patches aren't part of KDE (http://bugs.kde.org/show_bug.cgi?id=158424). Patches here http://ktown.kde.org/~seli/xinerama/ don't work for 3.5.9 though.
Created attachment 147585 [details, diff] new kdebase seli-xinerama patch for 3.5.8 and later
Created attachment 147586 [details, diff] new kdelibs seli-xinerama patch for 3.5.8 and later
the kdebase patch affects kwin and kdesktop ebuilds
Created attachment 147596 [details, diff] kdebase patch if applied directly from kdesktop ebuild
Created attachment 147597 [details, diff] kdebase patch if applied directly from kwin ebuild
The patches apply to 3.5.8 and 3.5.9 and were tested with KDE 3.5.9. kdelibs patch affects kwin and kdesktop. If applied from those ebuilds, the kdelibs patch needs to be split accordingly, or it will complain about not finding files to patch. Split patches are also attached.
Thanks, Vladimir! Fixed in CVS.