Switch to codeload for smaller filesize. We need to run autoreconf anyway

Signed-off-by: Rosen Penev <rosenp@gmail.com>

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>

Signed-off-by: Ondřej Caletka <ondrej@caletka.cz>

Signed-off-by: Stan Grishin <stangri@melmac.net>

Maintainer: Ondrej Caletka / @Oskar456
Compile tested: TurrisOS 3.1 (fork of OpenWRT Chaos Calmer), Trunk (both uClibC and musl)
Run tested: mpc85xx - Turris 1.0 -  TurrisOS - no problems observed
Upstream: https://github.com/fln/addrwatch / @fln

Description:

This is a tool similar to arpwatch. It's main purpose is to monitor network
and log discovered ethernet/ip pairings.

The package has been UCIfied, care has been taken to reload the deamon
every time an interface goes up or down.

Signed-off-by: Ondřej Caletka <ondrej@caletka.cz>