The CONTRIBUTING.md requests an (or multiple) SPDX identifier for GPL
licenses. But a lot of packages did use a different, non-SPDX style with a
"+" at the end instead of "-or-later".

Signed-off-by: Sven Eckelmann <sven@narfation.org>

fix Makefile chmod (644)
replace MD5SUM with HASH
add PKG_MIRROR_HASH when PKG_SOURCE_PROTO:=git

(PKG_SOURCE_PROTO:=svn tarballs are not reproducible for now)

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

According to netdevice(7) ifr_data is a "char *", not caddr_t.

Signed-off-by: Paul Fertser <fercerpav@gmail.com>

- update to latest version (v1.7.0)
 - add license info
 - add myself as maintainer

Signed-off-by: Nicolas Thill <nico@openwrt.org>