buildroot

dieharder: new package

Signed-off-by: Julien Viard de Galbert <julien@vdg.name>
Reviewed-by: Romain Naour <romain.naour@gmail.com>
[Thomas:
 - remove complicated DIEHARDER_POST_PATCH_FIXUP that replaces bogus
   libtool .m4 files: since we are anyway autoreconfiguring the
   package, this is not necessary. And therefore, remove host-libtool
   in the dependencies.
 - use GPL-2.0 instead of GPLv2
 - add entry in DEVELOPERS file.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>