* testsuite/incremental_test.sh: Rewrite. * testsuite/incremental_test_1.c: Rewrite. * testsuite/incremental_test_2.c: Rewrite.
* testsuite/Makefile.am: Add the incremental_test.sh test. * testsuite/incremental_test.sh: New. * testsuite/incremental_test_1.c: New. * testsuite/incremental_test_2.c: New.