perl-gdgraph: fix configure

see http://autobuild.buildroot.org/results/3e1/3e1698b0523dfa46f5b3ee03a22af820f7342c39/build-end.log

Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
perl: skip some tests which need the toolchain
perl: skip one test for DynaLoader
perl: check date in harness
perl-cross: testpack
qemu: add a Config.in.host

after the removal of cpanminus
perl: remove useless modules in target tree

with BR, we never install module from the target
perl-curses: new package
perl-io-socket-ip: new package