doc: mention HTTPS URLs when possible

README.rst

@@ -202,9 +202,9 @@ Developers interested in NEO may refer to
 `NEO Web site <https://neo.nexedi.com/>`_ and subscribe to following mailing
 lists:
 
-- `neo-users <http://mail.tiolive.com/mailman/listinfo/neo-users>`_:
+- `neo-users <https://mail.tiolive.com/mailman/listinfo/neo-users>`_:
   users discussion
-- `neo-dev <http://mail.tiolive.com/mailman/listinfo/neo-dev>`_:
+- `neo-dev <https://mail.tiolive.com/mailman/listinfo/neo-dev>`_:
   developers discussion
 
 Automated test results are published at

neo/client/cache.py

@@ -46,7 +46,7 @@ class ClientCache(object):
     """In-memory pickle cache based on Multi-Queue cache algorithm
 
       Multi-Queue algorithm for Second Level Buffer Caches:
-      http://www.usenix.org/event/usenix01/full_papers/zhou/zhou_html/index.html
+      https://www.usenix.org/event/usenix01/full_papers/zhou/zhou_html/index.html
 
       Quick description:
       - There are multiple "regular" queues, plus a history queue

neo/lib/util.py

@@ -59,7 +59,7 @@ def packTID(higher, lower):
     # seconds (e.g. TZ=right/UTC), then the best we can do is to use
     # TID_LOW_MAX, because TID format was not designed to support them.
     # For more information about leap seconds on Unix, see:
-    #   http://en.wikipedia.org/wiki/Unix_time
+    #   https://en.wikipedia.org/wiki/Unix_time
     #   http://www.madore.org/~david/computers/unix-leap-seconds.html
     return pack('!LL', packed_higher, min(lower, TID_LOW_MAX))
 

neo/storage/database/sqlite.py

@@ -62,7 +62,7 @@ class SQLiteDatabaseManager(DatabaseManager):
     """This class manages a database on SQLite.
 
     CAUTION: Make sure we never use statement journal files, as explained at
-             http://www.sqlite.org/tempfiles.html for more information.
+             https://www.sqlite.org/tempfiles.html for more information.
              In other words, temporary files (by default in /var/tmp !) must
              never be used for small requests.
     """