dnsmasq: use host-record instead of address

Using "--address" for individual host A records is broken, use "--host-record" instead.
The following patch changes dnsmasq.init to build individual host records using "--host-record" instead of "--address".

Signed-off-by: Adam Gensler <openwrt at gnslr.us>

[jow: shorter description, simplified shell script code]

SVN-Revision: 36943