Do not use ftp (#1369)

* Do not use ftp

`s#ftp://#https://#`

* Remove no-longer relevant comment

Author: malfet

ffmpeg/win/Dockerfile

@@ -35,7 +35,7 @@ RUN yum install -y \
     nano
 
 # Update automake to 1.15
-RUN wget http://ftp.gnu.org/gnu/automake/automake-1.15.tar.gz
+RUN wget https://ftp.gnu.org/gnu/automake/automake-1.15.tar.gz
 RUN tar -xzvf automake-1.15.tar.gz
 RUN cd automake-1.15.tar.gz && ./configure && make && make install
 

manywheel/build_scripts/build_utils.sh

@@ -1,14 +1,10 @@
 #!/bin/bash
 # Helper utilities for build
 
-# XXX: the official https server at www.openssl.org cannot be reached
-# with the old versions of openssl and curl in Centos 5.11 hence the fallback
-# to the ftp mirror:
-OPENSSL_DOWNLOAD_URL=ftp://ftp.openssl.org/source/old/1.1.1/
-# Ditto the curl sources
-CURL_DOWNLOAD_URL=http://curl.askapache.com/download
-
-AUTOCONF_DOWNLOAD_URL=http://ftp.gnu.org/gnu/autoconf
+OPENSSL_DOWNLOAD_URL=https://ftp.openssl.org/source/old/1.1.1/
+CURL_DOWNLOAD_URL=https://curl.askapache.com/download
+
+AUTOCONF_DOWNLOAD_URL=https://ftp.gnu.org/gnu/autoconf
 
 
 function check_var {