devscripts testsuite failure on raspbian.

[Peter Green]

In raspbian stretch devscripts is failing with.

> testFileExclusion
> uscan: uscan (version 2.15.10) See uscan(1) for help
> uscan: Scan watch files in .
> 127.0.0.1 - - [17/Jan/2016 14:24:39] "GET / HTTP/1.1" 200 -
> uscan: ./debian/changelog sets package="foo" version="0+dfsg1"
> 127.0.0.1 - - [17/Jan/2016 14:24:39] "GET /foo-1.tar.gz HTTP/1.1" 200 -
> 127.0.0.1 - - [17/Jan/2016 14:24:39] code 404, message File not found
> 127.0.0.1 - - [17/Jan/2016 14:24:39] "HEAD /foo-1.tar.gz.asc HTTP/1.1" 404 -
> 127.0.0.1 - - [17/Jan/2016 14:24:39] code 404, message File not found
> 127.0.0.1 - - [17/Jan/2016 14:24:39] "HEAD /foo-1.tar.gz.gpg HTTP/1.1" 404 -
> 127.0.0.1 - - [17/Jan/2016 14:24:39] code 404, message File not found
> 127.0.0.1 - - [17/Jan/2016 14:24:39] "HEAD /foo-1.tar.gz.pgp HTTP/1.1" 404 -
> 127.0.0.1 - - [17/Jan/2016 14:24:39] code 404, message File not found
> 127.0.0.1 - - [17/Jan/2016 14:24:39] "HEAD /foo-1.tar.gz.sig HTTP/1.1" 404 -
> uscan: Newest version on remote site is 1, local version is 0+dfsg1
>   (mangled local version is 0)
> uscan:    =>  Newer package available
> uscan: Downloading upstream package: foo-1.tar.gz
> uscan: Start checking for common possible upstream OpenPGP signature files
> uscan: End checking for common possible upstream OpenPGP signature files
> uscan: Successfully downloaded package foo-1.tar.gz
> uscan: Successfully repacked ../foo-1.tar.gz as ../foo_1+dfsg1.orig.tar.gz, deleting 8 files from it.
> uscan: Executing user specified script:
>     uupdate --no-symlink --upstream-version 1+dfsg1 ../foo_1+dfsg1.orig.tar.gz
> uupdate: New Release will be 1+dfsg1-0raspbian1.
> uupdate: Untarring the new sourcecode archive ../foo_1+dfsg1.orig.tar.gz
> uupdate: debian/source/format is "3.0 (quilt)".
> uupdate: Auto-generating foo_0+dfsg1-1.debian.tar.xz
> uupdate: Unpacking the debian/ directory from version 0+dfsg1-1 worked fine.
> uupdate: Remember: Your current directory is the OLD sourcearchive!
> uupdate: Do a "cd ../foo-1+dfsg1" to see the new package
> ASSERT:uscan: Version should be 1+dfsg1-1 but 1+dfsg1-0raspbian1 expected:<1+dfsg1-0raspbian1>  but was:<1+dfsg1-1>
It seems that the program itself and it's testsuite are making different 
assumptions about what the version numbering should be. I have no idea 
where to start on fixing this though.