After update nothing is installed to /usr/share/doc, previous version installed these files: /usr/share/doc/gdbm-1.10/AUTHORS.bz2 /usr/share/doc/gdbm-1.10/ChangeLog.bz2 /usr/share/doc/gdbm-1.10/NEWS.bz2 /usr/share/doc/gdbm-1.10/README.bz2 /usr/share/doc/gdbm-1.10/THANKS.bz2 Seems migration to multilib was done not correctly, similar bugs are bug #518316 and bug #518258
+ 26 Aug 2014; Michał Górny <mgorny@gentoo.org> gdbm-1.10-r1.ebuild, + gdbm-1.11.ebuild: + Install documentation files, bug #520944.