Upstream tarball splitted into two tarballs

[Laurent Rineau]

Since ipe-6.0pre32, the tool ipe5toxml is released as a separate tarball, 
upstream,  whereas is was previously shipped in the ipe tarball (as in 
ipe-6.0pre30).

I have updated Rawhide's ipe to 6.0pre32, but I do not know what to do with 
that tool that disappeared from the tarball.

Should I:
  - make the ipe package have two sources tarball, instead of one, and tweak 
the %prep/%build/%install parts?
  - or package ipe5toxml into a new separate package (with its own src.rpm)?

In the latter case, should ipe5toxml have
  Obsoletes: ipe<6.0-0.30.pre30?
without Provides?

I have not found that case in the packaging guidelines. I hope I have searched 
correctly.

-- 
Laurent Rineau
http://fedoraproject.org/wiki/LaurentRineau