Fix timeout option when used with SSL

Previously wget didn't honor the --timeout option if the remote host did
not answer SSL handshake

Signed-off-by: Tomas Hozza <thozza@redhat.com>
Fix HTTP Digest authentication when the algorithm is not specified
vms: support --backups
doc: document --backups
Make --backups work as documented
warc: Fix some portability issues on VMS.
Fix some memory leaks a problem introduced with the last commit
ntlm: support libnettle.
Fix erroneous error codes when HTTP Digest Authentication fails.
openssl: fix build.
Merge remote-tracking branch 'origin' into parallel-wget