Best way to move from .diff.gz patches to dpatch

["Kartik Mistry" <kartik.mistry@gmail.com>]

Dear all,

I am maintaining packages of festival family (festival, -dev, -doc,
speech-tools). I took maintainership sometime ago and fixed many bugs,
but package has no patch system ie all patches resides in .diff.gz.

Now, for better maintenance and making life easy for new upstream
release, I want to move to dpatch.

What are best way to do it? I have done manually with xosview (15
patches scattered in .diff.gz and reading changelog carefully, putting
correct patch submitter from BTS -- all hail).

Are there any easy way to do this?

-- 
 Cheers,
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