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BB: package: fix segfault of iwinfo.scanlist("radio0").

This is a bug revealed in r41830.

First, the static variable `char nif[IFNAMSIZ]` of nl80211_phy2ifname()
would be zeroed out if the argument is "wlan0" or the like.  This will
happen in the following call stack.

 nl80211_get_scanlist("radio0", buf, len);
   nl80211_phy2ifname("radio0")			// return static var nif with content "wlan0"
   nl80211_get_scanlist(nif, buf, len);		// tail call
     nl80211_get_mode(nif);
        nl80211_phy2ifname(nif);		// zero out nif

Later we try nl80211_ifadd("") which was supposed to create interface
"tmp.", but that won't happen because nl80211_msg() will put an invalid
ifidx 0 to the nlmsg.

Then iwinfo_ifup() and iwinfo_ifdown() would fail and happily
nl80211_get_scanlist() returned 0 and left *len undefined.

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

Backport of r42151

git-svn-id: svn://svn.openwrt.org/openwrt/branches/barrier_breaker@42152 3c298f89-4303-0410-b956-a3cf2f4a3e73
odhcpd: multiple DHCPv4 improvements (thx Christian Mehlis)

Signed-off-by: Steven Barth <steven@midlink.org>

git-svn-id: svn://svn.openwrt.org/openwrt/branches/barrier_breaker@42154 3c298f89-4303-0410-b956-a3cf2f4a3e73
BB: feeds: switch telephony feed to for-14.07 branch

Signed-off-by: Jiri Slachta <slachta@cesnet.cz>

git-svn-id: svn://svn.openwrt.org/openwrt/branches/barrier_breaker@42159 3c298f89-4303-0410-b956-a3cf2f4a3e73
Fix VLAN for TP-Link (ticket https://dev.openwrt.org/ticket/12181)
Merge branch 'master' into scooreggione