bmpx (svn) requires neon 0.25.5, and simply renaming ebuild and digesting it does the trick.. so it could be done?
Don't restrict bugs...
It seems that subversion does not yet support the new neon library version. I'll try to find out whether it's a problem.
According to the subversion repository this neon version is supported, I've fixed subversion, and committed the new neon to the tree.