bootstrap, gnulib-tool: use https instead of insecure rsync The rsync command does not do any authentication and thus allows man-in-the-middle attacks. Better use wget over https, although this is slower. * build-aux/bootstrap (download_po_files, po_download_command_format): Don't try using rsync; always use wget over https to fetch PO files. * gnulib-tool (func_import): Likewise. * pygnulib/GLImport.py (GLImport.execute): Likewise.