* intrinsics/pack_generic.c (pack): Remove unneeded calculation.

	* m4/matmull.m4 (matmul_): Remove unneeded calculations, fix
	pointer cast to avoid warning.
	* generated/matmul_l4.c: Regenerated.
	* generated/matmul_l8.c: Regenerated.

	* Makefile.am: Remove AM_CFLAGS here.
	* configure.ac: Define AM_CFLAGS and AM_FCFLAGS so that warnings
	are set.  Set additionally -Wstrict-prototypes for CFLAGS.
	* Makefile.in: Regenerated
	* configure: Regenerated.

From-SVN: r99723