Changelog for libunistring-devel-0.9.3-4.el6.i686.rpm :
Mon Sep 12 14:00:00 2011 Stephen Gallagher - 0.9.3-4
- Resolves: rhbz#737592 - %preun error while uninstalling libunistring-devel

Tue Aug 2 14:00:00 2011 Stephen Gallagher - 0.9.3-3
- Imported from Fedora
- Resolves: rhbz#726463 - Add libunistring as a separate component/package
into RHEL