Append $(EXEEXT) to programs that may be listed in TESTS. Report from Simon Josefsson. * automake.in (%known_programs): New global. (initialize_per_input): Reset it. (append_exeext): Take a predicate as first argument to select the filename to rewrite. (handle_programs): Fill %known_programs. (handle_tests): Append $(EXEEXT) to all tests that are in %known_programs. (am_install_var): Update call to append_exeext. * doc/automake.texi (EXEEXT): TESTS is also rewritten. (Tests): More about the difference between check_PROGRAMS and TESTS. Give an example of TEST_ENVIRONMENT. * tests/cond32.test: Augment with a nested condition. * tests/exeext4.test: Also check TESTS. * tests/check5.test: New file. * tests/Makefile.am (TESTS): Add check5.test.