acker1.c: Report failure.

acker1.c: Report failure.

	* gcc.misc-tests/acker1.c: Report failure.  Use return from main,
	not exit. Include stdio.h.
	* gcc.misc-tests/dg-11.c: Remove anchors from regexp.
	* gcc.misc-tests/dg-12.c: Likewise.
	* gcc.misc-tests/dg-5.c: Likewise.
	* gcc.misc-tests/dg-6.c: Likewise.
	* gcc.misc-tests/dg-7.c: Prototype abort.
	* gcc.misc-tests/dg-9.c: Adjust error-message regexps.
	* gcc.misc-tests/dhry.h: Include stdlib.h and string.h.
	* gcc.misc-tests/matrix1.c: Report failure.  Use return from main,
	not exit.
	* gcc.misc-tests/sieve.c: Use return from main, not exit.
	* gcc.misc-tests/sort2.c: Use return from main, not exit.

From-SVN: r34763