Merge JoinMarket-Org/joinmarket-clientserver#1656: Tell libsodium not to download code from savannah.gnu.org in `autogen.sh`

bbc2150c3b Tell libsodium not to download code from savannah.gnu.org in autogen.sh (Kristaps Kaupe)

Pull request description:

  Fixes #1655.

Top commit has no ACKs.

Tree-SHA512: 14d9be5990cca6f88d5369bab50e8bfa5838d28c2ce7a9f6ea2f1e1274dacc4814fb4a7b6cacd528973621cd8cbca4f05de2a31de8ea231ffb97e60c04c28ac4

install.sh

@@ -344,7 +344,7 @@ libsodium_build ()
 {
     $make uninstall
     $make distclean
-    ./autogen.sh
+    ./autogen.sh DO_NOT_UPDATE_CONFIG_SCRIPTS=1
     ./configure \
         --enable-minimal \
         --enable-shared \