kawa's install-info invocations are not failsafe against excludedocs or read-only-netsharedpath-/usr/share installations; appending "|| :" to the invocations in %post and %postun would fix it. Additionally, "Requires(post): /sbin/install-info" and "Requires(postun): /sbin/install-info" seem to be missing. More info: http://fedoraproject.org/wiki/Packaging/ScriptletSnippets
Fixed. Thanks!