testsuite: Filter unaligned pointer value warning

testsuite: Filter unaligned pointer value warning

Targets which pack structures by default will not get warnings about
unaligned access to structure members.

gcc/testsuite/ChangeLog:

	* c-c++-common/Waddress-of-packed-member-1.c: Filter dg-warning
	for targets who pack by default.
	* c-c++-common/Waddress-of-packed-member-2.c: Ditto.
	* c-c++-common/pr51628-13.c: Ditto.
	* c-c++-common/pr51628-15.c: Ditto.
	* c-c++-common/pr51628-16.c: Ditto.
	* c-c++-common/pr51628-26.c: Ditto.
	* c-c++-common/pr51628-27.c: Ditto.
	* c-c++-common/pr51628-28.c: Ditto.
	* c-c++-common/pr51628-29.c: Ditto.
	* c-c++-common/pr51628-3.c: Ditto.
	* c-c++-common/pr51628-30.c: Ditto.
	* c-c++-common/pr51628-31.c: Ditto.
	* c-c++-common/pr51628-32.c: Ditto.
	* c-c++-common/pr51628-33.c: Ditto.
	* c-c++-common/pr51628-35.c: Ditto.
	* c-c++-common/pr51628-4.c: Ditto.
	* c-c++-common/pr51628-5.c: Ditto.
	* c-c++-common/pr51628-6.c: Ditto.
	* c-c++-common/pr51628-8.c: Ditto.
	* c-c++-common/pr51628-9.c: Ditto.
	* c-c++-common/pr88664-2.c: Ditto.
	* gcc.dg/pr51628-17.c: Ditto.
	* gcc.dg/pr51628-19.c: Ditto.
	* gcc.dg/pr51628-20.c: Ditto.
	* gcc.dg/pr51628-21.c: Ditto.
	* gcc.dg/pr51628-22.c: Ditto.
	* gcc.dg/pr51628-24.c: Ditto.
	* gcc.dg/pr51628-25.c: Ditto.
	* gcc.dg/pr51628-34.c: Ditto.
	* gcc.dg/pr88928.c: Ditto.

Signed-off-by: Dimitar Dimitrov <dimitar@dinux.eu>