Bug#880777: Pending fixes for bugs in the pdl package

[pkg-perl-maintainers at lists.alioth.debian.org]

tag 880777 + pending
thanks

Some bugs in the pdl package are closed in revision
df2742e409e9d11a83f47646fb4177166a6916e5 in branch 'master' by gregor
herrmann

The full diff can be seen at
https://anonscm.debian.org/cgit/pkg-perl/packages/pdl.git/commit/?id=df2742e

Commit message:

    Change build dependency from libgd2-xpm-dev to libgd-dev.
    
    The former is gone, and also not provided anymore by the latter.
    
    Thanks: Adrian Bunk for the bug report.
    Closes: #880777