* src/bin/autfilt.cc: Use isomorphism_checker.
* src/tgbaalgos/are_isomorphic.cc, src/tgbaalgos/are_isomorphic.hh: Wrap
are_isomorphic inside a class to keep the canonic version of the first
automaton between two calls, and use a more efficient algorithm in case
both automata are deterministic.
* src/tgbatest/isomorph.test: Add tests for deterministic automata.
* src/tgbaalgos/are_isomorphic.cc, src/tgbaalgos/are_isomorphic.hh,
src/bin/autfilt.cc: are_isomorphic now uses canonicalize. It returns a
bool, because the mapping cannot be deduced easily from the
canonicalized automaton.
* src/graph/graph.hh: Add equality operator to trans_storage_t
for easy comparison of transition vectors.
* src/tgba/tgbagraph.hh: Add equality operator to tgba_graph_trans_data
and to tgba_digraph.
* src/tgbaalgos/canonicalize.cc, src/tgbaalgos/canonicalize.hh:
New files.
* src/tgbaalgos/Makefile.am: Add them.
* src/tgbatest/isomorph.test: Test them.
* src/tgbaalgos/are_isomorphic.cc (is_isomorphism): Do not copy
trans_storage_t elements as they contain more than what we use.
Remap the states of a1 before the sort, not during the sort.
(are_trivially_different): Also catch the case where the
number of acceptance sets are different.
* src/tgbaalgos/are_isomorphic.hh: Improve doxygen.
And add the corresponding --isomorphic=FILENAME option to autfilt.
* src/tgbaalgos/are_isomorphic.cc, src/tgbaalgos/are_isomorphic.hh:
New.
* src/tgbaalgos/Makefile.am: Add it.
* src/bin/autfilt.cc: Add --isomorphic option.
* src/tgbatest/isomorph.test: Test it.
* src/tgbatest/Makefile.am: Add it.
