utils: provide size_to_str()
Moving the algorithm from print_type_size() into size_to_str() so that other component can also leverage it. With that, refactor print_type_size(). The assert() in that logic is removed though, since even UINT64_MAX would not overflow. Signed-off-by: NPeter Xu <peterx@redhat.com> Message-Id: <1494562661-9063-3-git-send-email-peterx@redhat.com> Reviewed-by: NMarkus Armbruster <armbru@redhat.com> Signed-off-by: NDr. David Alan Gilbert <dgilbert@redhat.com>
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