gnu: perl-pdl: Make printing text work with glut backend, too....* gnu/packages/patches/pdl-2.019-glut-bitmap-fonts.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/perl-maths.scm (perl-pdl)[source]: Use it.
Change-Id: I0331b1192d75a69831168d2fd634cadaa6260cd4