Refs #4472. Reduced minimum sphinx versino for fedora.

Code/Mantid/MantidPlot/docs/python/runsphinx.py.in

@@ -16,6 +16,6 @@ argv = [mantidplot,'-b', builder, src_dir, output_dir]
 
 if __name__ == '__main__':
     sys.exit(
-      load_entry_point('Sphinx==1.1.2', 'console_scripts', 'sphinx-build')(argv)
+      load_entry_point('Sphinx==1.0.7', 'console_scripts', 'sphinx-build')(argv)
     )