doc: Change remaining http links to gnupg.org to https

--
GnuPG-bug-id: 1830

README

@@ -145,9 +145,9 @@
   enter "make pdf" For a HTML version enter "make html" and point your
   browser to gnupg.html/index.html.  Standard man pages for all
   components are provided as well.  An online version of the manual is
-  available at http://www.gnupg.org/documentation/manuals/gnupg/ .  A
+  available at [[https://gnupg.org/documentation/manuals/gnupg/]] .  A
   version of the manual pertaining to the current development snapshot
-  is at http://www.gnupg.org/documentation/manuals/gnupg-devel/ .
+  is at [[https://gnupg.org/documentation/manuals/gnupg-devel/]] .
 
 
 * GnuPG 1.4 and GnuPG 2.0
@@ -172,7 +172,7 @@
              or using TOR "http://ic6au7wa3f6naxjq.onion"
   The primary FTP site is "ftp://ftp.gnupg.org/gcrypt/"
 
-  See https://www.gnupg.org/download/mirrors.html for a list of
+  See [[https://gnupg.org/download/mirrors.html]] for a list of
   mirrors and use them if possible.  You may also find GnuPG mirrored
   on some of the regular GNU mirrors.
 

doc/gpg.texi

@@ -342,7 +342,7 @@ useful for debugging.
 Present a menu to work with a smartcard. The subcommand "help" provides
 an overview on available commands. For a detailed description, please
 see the Card HOWTO at
-http://www.gnupg.org/documentation/howtos.html#GnuPG-cardHOWTO .
+https://gnupg.org/documentation/howtos.html#GnuPG-cardHOWTO .
 
 @item --card-status
 @opindex card-status

g10/sig-check.c

@@ -106,7 +106,7 @@ signature_check2 (PKT_signature *sig, gcry_md_hd_t digest, u32 *r_expiredate,
 		log_info(_("WARNING: signing subkey %s is not"
 			   " cross-certified\n"),keystr_from_pk(pk));
 		log_info(_("please see %s for more information\n"),
-			 "http://www.gnupg.org/faq/subkey-cross-certify.html");
+			 "https://gnupg.org/faq/subkey-cross-certify.html");
 		/* --require-cross-certification makes this warning an
                      error.  TODO: change the default to require this
                      after more keys have backsigs. */