upload: downloads.haskell.org is now webhost.haskell.org

rel-eng/upload.sh

@@ -43,7 +43,7 @@ if [ -z "$ver" ]; then
     if [ -z "$ver" ]; then echo "Failed to infer \$ver"; exit 1; fi
 fi
 
-host="downloads.haskell.org"
+host="webhost.haskell.org"
 
 usage() {
     echo "Usage: [rel_name=<name>] ver=7.10.3-rc2 GHC_TREE=/path/to/ghc/tree $0 <action>"