Use more specific BuildRequires for docs, fix FTBFS against ICU 54 (F22/F23)
* Sat Jan 09 2016 Kevin Kofler <Kevin@tigcc.ticalc.org> - 5.6.0-0.4.beta1.1
- Use more specific BuildRequires for docs (thanks to rdieter)
- Fix FTBFS against ICU 54 (F22/F23), thanks to spot for the Chromium fix