move spot/bin/ and spot/tests/ up by one level

* spot/bin/: Move...
* bin/: ... here.
* spot/tests/: Move...
* tests/: ... here.
* Makefile.am, README, bench/stutter/Makefile.am,
bench/stutter/stutter_invariance_formulas.cc, doc/Makefile.am,
configure.ac, debian/rules, spot/Makefile.am, spot/ltsmin/Makefile.am,
spot/ltsmin/kripke.test, spot/sanity/style.test, python/tests/run.in:
Adjust.

bin/man/dstar2tgba.x

@@ -0,0 +1,107 @@
+[NAME]
+dstar2tgba \- convert automata into Büchi automata
+[HISTORY]
+.B dstar2tgba
+was introduced in Spot 1.2 as a command that reads automata
+in
+.BR ltl2dstar 's
+format, and converts them into TGBA.  At this time it was
+the only command-line tool being able to read automata.
+.PP
+In Spot 1.99.1 the
+.B autfilt
+command was introduced, but could only read automata
+in the HOA format, or in
+.BR lbtt 's
+format, or as never claims.  So
+.B dstar2tgba
+was still the only way to process automata
+in
+.BR ltl2dstar 's
+format.
+.PP
+In Spot 1.99.4 the parser for
+.BR ltl2dstar 's
+format was finally merged with the parser
+used by
+.B autfilt
+for reading the other format.  This implies not only
+that
+.B autfilt
+can now read
+.BR ltl2dstar's
+format, but also that
+.B dstar2tgba
+can read the other formats as well.
+
+Nowadays, the command
+.PP
+.in +4n
+.nf
+.ft C
+% dstar2tgba some files
+.fi
+.PP
+can be used as a shorthand for
+.PP
+.in +4n
+.nf
+.ft C
+% autfilt \-\-tgba \-\-high \-\-small some files
+.fi
+.PP
+The name
+.B dstar2tgba
+is kept for backward compatibility and because it is used
+in at least one published paper, but naming this tool
+.B aut2tgba
+would make more sense.
+
+[BIBLIOGRAPHY]
+.TP
+1.
+<http://www.ltl2dstar.de/docs/ltl2dstar.html>
+
+Documents the output format of ltl2dstar.
+
+.TP
+2.
+Chistof Löding: Mehods for the Transformation of ω-Automata:
+Complexity and Connection to Second Order Logic.  Diploma Thesis.
+University of Kiel. 1998.
+
+Describes various tranformations from non-deterministic Rabin and
+Streett automata to Büchi automata.  Slightly optimized variants of
+these transformations are used by dstar2tgba for the general cases.
+
+.TP
+3.
+Sriram C. Krishnan, Anuj Puri, and Robert K. Brayton: Deterministic
+ω-automata vis-a-vis Deterministic Büchi Automata.  ISAAC'94.
+
+Explains how to preserve the determinism of Rabin and Streett automata
+when the property can be repreted by a Deterministic automaton.
+dstar2tgba implements this for the Rabin case only.  In other words,
+translating a deterministic Rabin automaton with dstar2tgba will
+produce a deterministic TGBA or BA if such a automaton exists.
+
+.TP
+4.
+Souheib Baarir and Alexandre Duret-Lutz: Mechanizing the minimization
+of deterministic generalized Büchi automata.  Proceedings of FORTE'14.
+LNCS 8461.
+
+Explains the SAT-based minimization techniques that can be used (on
+request only) by dstar2tgba to minimize deterministic Büchi automata.
+
+.TP
+5.
+Souheib Baarir and Alexandre Duret-Lutz: SAT-based minimization of
+deterministic ω-automata.  Proceedings of LPAR'15 (a.k.a LPAR-20).
+LNCS 9450.
+
+Extends the previous paper by allowing arbitrary acceptance
+conditions.
+[SEE ALSO]
+.BR spot-x (7),
+.BR autfilt (1)