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>
Package versions newer than 0.28 require meson/ninja which OpenWrt does not
support in its build environment. These files provide the minimum autotool
configuration necessary to build later versions.
Signed-off-by: Ted Hess <thess@kitschensync.net>
