Fix many dead links.

Also change http:// to https:// for url that would automatically
redirect to the later.

* doc/mainpage.dox, doc/org/dstar2tgba.org, doc/org/ltl2tgba.org,
doc/org/ltlcross.org, doc/org/satmin.org, doc/org/tools.org,
src/ltlvisit/dot.hh, src/misc/hashfunc.hh, wrap/python/ajax/trans.html:
Here.

doc/mainpage.dox

@@ -6,7 +6,7 @@
 /// structures to manipulate omega-automata, and implement the
 /// automata-theoretic approach to model-checking.
 ///
-/// See <a href="http://spot.lrde.epita.fr/">spot.lrde.epita.fr</a>
+/// See <a href="https://spot.lrde.epita.fr/">spot.lrde.epita.fr</a>
 /// for more information about this project.
 ///
 /// \section thisdoc This Document

doc/org/dstar2tgba.org

@@ -94,7 +94,7 @@ digraph G {
 #+end_example
 
 Which can be rendered as (note that in this documentation
-we use some [[file:aout.org][environement variables]] to produce a more colorful
+we use some [[file:oaut.org][environment variables]] to produce a more colorful
 output by default):
 
 #+NAME: fagfb2ba
@@ -293,7 +293,7 @@ For instance using =-a --low= will skip any optional post-processing,
 should you find =dstar2tgba= too slow.
 
 Finally, the output format can be changed with the following
-[[file:oaout.org][common ouput options]]:
+[[file:oaut.org][common ouput options]]:
 #+BEGIN_SRC sh :results verbatim :exports results
 dstar2tgba --help | sed -n '/Output format:/,/^$/p' | sed '1d;$d'
 #+END_SRC

doc/org/ltl2tgba.org

@@ -51,7 +51,7 @@ ltl2tgba "Fa & GFb" | dot -Tpdf > tgba.pdf
 #+RESULTS:
 
 The result would look like this (note that in this documentation
-we use some [[file:aout.org][environment variables]] to produce a more colorful
+we use some [[file:oaut.org][environment variables]] to produce a more colorful
 output by default)
 #+NAME: dotex
 #+BEGIN_SRC sh :results verbatim :exports none

doc/org/ltlcross.org

@@ -131,7 +131,7 @@ tools:
   - '=ltl3ba -M0 -f %s >%O=' (less deterministic output, can be smaller)
   - '=ltl3ba -M1 -f %s >%O=' (more deterministic output)
   - '=modella -r12 -g -e %L %O='
-  - '=/path/to/script4lbtt.py %L %O=' (script supplied by [[http://www.ti.informatik.uni-kiel.de/~fritz/][ltl2nba]] for
+  - '=/path/to/script4lbtt.py %L %O=' (script supplied by [[http://web.archive.org/web/20070214050826/http://estragon.ti.informatik.uni-kiel.de/~fritz/][ltl2nba]] for
     its interface with LBTT)
   - '=ltl2tgba -s %s >%O=' (smaller output, Büchi automaton)
   - '=ltl2tgba -s -D %s >%O=' (more deterministic output, Büchi automaton)

doc/org/satmin.org

@@ -35,7 +35,7 @@ Let us first state a few facts about this minimization procedure.
    to the SAT solver) exceeds $2^{31}$, or when the SAT-solver was
    killed by a signal. [[file:autfilt.org][=autfilt --sat-minimize=]] will only output an
    automaton if the SAT-based minimization was successful.
-6) Our [[http://www.lrde.epita.fr/~adl/dl/adl/baarir.14.forte.pdf][FORTE'14 paper]] describes the SAT encoding for the minimization
+6) Our [[https://www.lrde.epita.fr/~adl/dl/adl/baarir.14.forte.pdf%0A][FORTE'14 paper]] describes the SAT encoding for the minimization
    of deterministic BA and TGBA.  Since then, the technique used in
    the SAT encoding for deterministic TGBA has been generalized to
    deal with any deterministic TωA.
@@ -292,7 +292,7 @@ degeneralized in the meantime for the purpose of determinization.
 
 * Low-level details
 
-The following figure (from our [[http://www.lrde.epita.fr/~adl/dl/adl/baarir.14.forte.pdf][FORTE'14 paper]]) gives an overview of
+The following figure (from our [[https://www.lrde.epita.fr/~adl/dl/adl/baarir.14.forte.pdf][FORTE'14 paper]]) gives an overview of
 the processing chains that can be used to turn an LTL formula into a
 minimal DBA/DTBA/DTGBA.  The blue area at the top describes =ltl2tgba
 -D -x sat-minimize=, while the purple area at the bottom corresponds

doc/org/tools.org

@@ -65,7 +65,7 @@ the following articles:
 
 - *Manipulating LTL formulas using Spot 1.0*, /Alexandre Duret-Lutz/.
   In Proc. of ATVA'13, LNCS 8172, pp. 442--445.  Hanoi, Vietnam,
-  Oct. 2013.  ([[http://www.lrde.epita.fr/~adl/dl/adl_bib.html#duret.13.atva][bib]] | [[https://www.lrde.epita.fr/~adl/dl/adl/duret.13.atva.pdf][pdf]] | [[https://www.lrde.epita.fr/~adl/dl/adl/duret.13.atva.slides.pdf][slides]])
+  Oct. 2013.  ([[https://www.lrde.epita.fr/~adl/dl/adl_bib.html#duret.13.atva][bib]] | [[https://www.lrde.epita.fr/~adl/dl/adl/duret.13.atva.pdf][pdf]] | [[https://www.lrde.epita.fr/~adl/dl/adl/duret.13.atva.slides.pdf][slides]])
 
   This focuses on =ltlfilt=, =randltl=, and =ltlcross=.