The previous code was sometime doing the work of remove_fin() in
addition to complementing the acceptance conditions. This separate
the two operations clearly. Also the specialized code for
complementing weak automata is now a specialized code for remove_fin()
on weak automata.
* src/twaalgos/dtgbacomp.hh, src/twaalgos/dtgbacomp.cc: Rename as ...
* src/twaalgos/complement.hh, src/twaalgos/complement.cc: ... these.
* src/twaalgos/Makefile.am: Adjust.
* src/twaalgos/complement.hh (dtgba_complement): Rename as ...
(dtwa_complement): ... this, and restrict the purpose to completion
and accetance complementation. Further acceptance simplification
can be done with remove_fin() and to_generalized_buchi().
* src/twaalgos/remfin.cc (remove_fin): Specialize handling of weak
automata using the code that was originally in dtgba_complement().
Also mark the output as state-based when the input has to Inf.
* src/twaalgos/postproc.cc, src/twaalgos/postproc.hh: Make sure
scc_filter is always called after to_generalized_buchi().
* bench/stutter/stutter_invariance_randomgraph.cc,
src/bin/ltlcross.cc, src/tests/ikwiad.cc, src/twaalgos/minimize.cc,
src/twaalgos/powerset.cc, src/twaalgos/stutter.cc: Adjust usage.
* src/tests/dstar.test, src/tests/ltl2dstar4.test,
src/tests/remfin.test: Adjust expected outputs.
* wrap/python/spot_impl.i: Export dtwa_complement().
* src/twaalgos/dupexp.cc, src/twaalgos/dupexp.hh: Rename to...
* src/twaalgos/copy.cc, src/twaalgos/copy.hh: ... these.
Get rid of dupexp_bfs, rename dupexp_dfs as copy, and add
an option to preserve named states.
* src/twaalgos/Makefile.am, src/tests/dupexp.test,
src/tests/ikwiad.cc, src/tests/sccsimpl.test,
src/twa/twagraph.hh, src/twaalgos/dot.cc,
src/twaalgos/stutter.cc, wrap/python/spot_impl.i: Adjust.
* NEWS: Mention this change.
Since we just removed that conversion, those can go as well. Yay!
* src/tests/kv.test, src/twa/twamask.cc,
src/twa/twamask.hh, src/twa/twaproxy.cc,
src/twa/twaproxy.hh, src/twaalgos/scc.cc,
src/twaalgos/scc.hh: Delete.
* src/twaalgos/Makefile.am, src/twa/Makefile.am,
src/tests/Makefile.am, src/tests/ikwiad.cc: adjust.
* src/twaalgos/isunamb.hh, src/twaalgos/isunamb.cc: New files.
* src/twaalgos/Makefile.am: Add them.
* src/tests/unambig.test: New file.
* src/tests/Makefile.am: Add it.
* src/bin/ltlcross.cc: Record whether each produced automaton is
ambiguous.
* src/bin/autfilt.cc: Add a --is-unambiguous option.
* NEWS: Mention it.
