support/script/scancpan: fix corelist check

module could be removed of the core,
so check if the module is currently in the core,
but not if the module was once time included in the core.

Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
user guest
perl: skip some tests which need the toolchain
perl: fix test IO-Socket-IP
perl: check date in harness
perl-cross: testpack
perl-config-tiny: new package
perl-curses: new package
support/script/scancpan: remove duplicated dependency

dependency from metacpan comes as a list of module
which is transformed in a list of distribution for BR.
different modules could be included in the same distribution,
so duplication is possible.