Annotate pools with valgrind macros so that it detects errors in pool
usage. Typically, we wish valgrind to detect a leak when the user fails
to call proper deallocation function.
* spot/misc/fixpool.hh, spot/misc/mspool.hh: here
* configure.ac: ensure that valgrind header exists
* tests/Makefile.am, tests/core/mempool.cc, tests/core/mempool.test,
tests/core/.gitignore: add tests to ensure valgrind accurately detects
leaks
This improves the coverage for bdd_dict::assert_emptiness() and
bdd_dict::dump().
* tests/core/bdddict.cc, tests/core/bdddict.test: New files.
* tests/Makefile.am, tests/core/.gitignore: Adjust.
* spot/twaalgos/sccinfo.hh, spot/twaalgos/sccinfo.cc: Take
a filter function as optional argument.
* tests/core/sccif.cc, tests/core/sccif.test: New files.
* tests/Makefile.am, tests/core/.gitignore: Adjust.
* NEWS: Mention the new feature.
