Put versions in the script and weavedns too, and report them

sudo weave version

bin/release

@@ -47,6 +47,8 @@ build() {
     ## (library versions?)
 
     sed -i "/var version = / c\var version = \"$VERSION\"" weaver/main.go
+    sed -i "/var version = / c\var version = \"$VERSION\"" weavedns/main.go
+    sed -i "/SCRIPT_VERSION=/ c\SCRIPT_VERSION=\"$VERSION\"" ./weave
     make \
         WEAVER_IMAGE=$DOCKERHUB_USER/weave \
         WEAVEDNS_IMAGE=$DOCKERHUB_USER/weavedns