Use built-in RPM dependency generator in all packages

camomile.spec, ocaml-libvirt.spec, ounit.spec and text.spec turn off RPM's built in dependency generation:
> %define _use_internal_dependency_generator 0 
This doesn't cause problems building in mock, but does seem to cause dependency problems when building without it.   

The ocaml-find-requires.sh and ocaml-find-provides.sh scripts seem quite old and it looks like they are no longer needed with modern versions of RPM.   Is there any reason to use them in these four spec files?