annotate libtests/9000/prog1.c @ 497:9d8aee621afb api-inversion

More libtests fixups.

Include audiodb_close() calls everywhere (whoops).

Add the facility to run tests under valgrind.  Unfortunately the
error-exitcode flag doesn't actually cause an error exit if the only
thing wrong is memory leaks, but it will if there are actual memory
errors, which is a start.

#include "audioDB_API.h"
#include "test_utils_lib.h"

int main(int argc, char **argv) {
  return 14;
}