ipset: force the shell to bash to fix build issues on mac os x

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@37227 3c298f89-4303-0410-b956-a3cf2f4a3e73
build: move the XARGS variable out of the host checks, since a working xargs is built in tools/

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@37228 3c298f89-4303-0410-b956-a3cf2f4a3e73
ar71xx: fix some more issues with initramfs images

Signed-off-by: Florian Fainelli <florian@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@37229 3c298f89-4303-0410-b956-a3cf2f4a3e73