[Debian-med-packaging] Bug#493341: Fix for 493341 (and a couple of other fixes you might want to apply)

[peter green]

tags 493341 +patch
thanks

add bioperl to the build-depends to fix this bug.

you might also want to add  libgd-gd2-perl to the build-depends to fix 
the following warning

        -------------------------------------------------
                            WARNING
        -------------------------------------------------
         GD.pm does not seem to be installed.

         GD is reqired to produce "sequence logos" from
         information content matrices. If you need this
         functionality, please visit
         http://stein.cshl.org/WWW/software/GD/
         for information on obtaining and installing GD.
        -------------------------------------------------

The package also FTBFS if built twice in a row because after a build the 
clean target prompts for user input. I this can be fixed by removing 
unpatch from the dependencies of the clean target and adding 
"debian/rules unpatch" to the end of the clean target.

note: while this bug was reported from a s390 buildlog it seems to be a 
general problem (it failed on every autobuiler that tried to build it). 
My testing was done on amd64.