- move /usr/bin/bdftogd to bdftogd.perl-gd to avoid conflict with
gd package

- updated to 2.56
see /usr/share/doc/packages/perl-GD/ChangeLog
2.56 * Fix Makefile.PL so that it works again.
2.55 * Great simplification of regression framework ought to fix make test problems.
* Replace ExtUtils::MakeMaker script with Module::Build system
(just in time for Module::Build to be deprecated).
* Remove archaic qd.pl (for creating QuickDraw picts) from distribution.
2.54 Patch from yurly@unet.net to fix image corruption in rotate180 when image height is odd.
2.53 Points to Gabor Szabo's GD::Simple tutorial, and fix link to repository.
2.52 Fix regression tests to run on Ubuntu 12.04 64bit.