Extra bad olsr protection (#992)

* Better protection for missing olsrd files

feeds.conf

@@ -1 +1 @@
-src-git arednpackages https://github.com/aredn/aredn_packages;develop
+src-git arednpackages https://github.com/kn6plv/aredn_packages;working

files/usr/local/bin/mgr/namechange.lua

@@ -70,6 +70,7 @@ function do_namechange()
     local subdomains = ""
 
     -- Load the hosts file
+    if nixio.fs.stat("/var/run/hosts_olsr.stable") then
         for line in io.lines("/var/run/hosts_olsr.stable")
         do
             local v = line:splitWhiteSpace()
@@ -93,6 +94,7 @@ function do_namechange()
                 end
             end
         end
+    end
 
     -- Find the current neighbors
     local raw = io.popen("/usr/bin/wget -O - http://127.0.0.1:9090/links 2> /dev/null")

files/www/cgi-bin/mesh

@@ -312,6 +312,7 @@ end
 -- discard
 routes = nil
 
+if nixio.fs.stat("/var/run/services_olsr") then
     for line in io.lines("/var/run/services_olsr")
     do
         if line:match("^%w") then
@@ -339,6 +340,7 @@ do
             end
         end
     end
+end
 
 -- load the node history
 if nixio.fs.stat("/tmp/node.history") then