binutils-2.9.1.0.23-6 calls /sbin/install-info, but the package doesn't have a dependency on the info package (which contains install-info). If binutils is installed before info, the %post script will fail.
I've built a binutils-2.9.1.0.23-7 package which will be in the next RawHide release which depends on /sbin/install-info, as it should. Thanks for reporting this.