This replaces deprecated backticks by more versatile $(...) syntax. Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 41865
Signed-off-by: John Crispin <blogic@openwrt.org> SVN-Revision: 37248