Convert http links to https where possible in the source.

--
 * use https for bug reporting
 * in comments and docs, use https to refer to:
    - www.gnu.org
    - creativecommons.org
    - translationproject.org
    - mail.gnome.org
    - www.perl.org
    - www.ctan.org
    - www.cl.cam.ac.uk
    - www.ntg.nl
    - cygwin.com
    - www.ethnologue.com

3 files changed, 3 insertions, 3 deletions

diff --git a/doc/Makefile.am b/doc/Makefile.am
index 8949f81..ddb7e48 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -14,7 +14,7 @@
 # GNU Lesser General Public License for more details.
 #
 # You should have received a copy of the GNU Lesser General Public
-# License along with this program; if not, see <http://www.gnu.org/licenses/>.
+# License along with this program; if not, see <https://www.gnu.org/licenses/>.
 
 
 EXTRA_DIST = HACKING errorref.txt \
diff --git a/doc/ldap2gpgerr.c b/doc/ldap2gpgerr.c
index 515bf40..f6fd3cf 100644
--- a/doc/ldap2gpgerr.c
+++ b/doc/ldap2gpgerr.c
@@ -8,7 +8,7 @@
  *
  * You should have received a copy of the CC0 Public Domain Dedication
  * along with this software.  If not, see
- *                 <http://creativecommons.org/publicdomain/zero/1.0/>.
+ *                 <https://creativecommons.org/publicdomain/zero/1.0/>.
  */
 
 /*
diff --git a/doc/yat2m.c b/doc/yat2m.c
index f780952..5039cc2 100644
--- a/doc/yat2m.c
+++ b/doc/yat2m.c
@@ -13,7 +13,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ * along with this program; if not, see <https://www.gnu.org/licenses/>.
  */
 
 /*