... by calling valgrind less often. * tests/core/reduc.test, tests/core/reducpsl.test: Call valgrind only on 1 of the 12 calls to randltl, and 2 of the 7 calls to reduc.
* tests/: Rename as... * tests/core/: ... this. * python/tests/: Rename as... * tests/python/: ... this. * python/tests/run.in: Move as... * tests/run.in: This, and adjust. * tests/Makefile.am: Adjust to run both core and python tests. * configure.ac, README, debian/python3-spot.examples, debian/rules, doc/org/tut.org, python/Makefile.am, spot/ltsmin/Makefile.am, spot/ltsmin/kripke.test, spot/sanity/ipynb.test: Adjust.