coverage: --program-transform shouldn't transform too much Stemmed from a report by Vladimir 'φ-coder/phcoder' Serbinenko: <http://lists.gnu.org/archive/html/automake/2012-02/msg00025.html> * tests/transform3.test: New test, checking that --program-transform does not transform too much stuff (in particular, pkglibexecdir, pgklibdir and pkgdatadir). * tests/list-of-tests.mk: Add it. * THANKS: Update.