* configure.ac (libffi_cv_as_x86_pcrel): Check for illegal in as
	output, too.
	(libffi_cv_as_ascii_pseudo_op): Check for .ascii.
	(libffi_cv_as_string_pseudo_op): Check for .string.
	* configure: Regenerate.
	* fficonfig.h.in: Regenerate.
	* src/x86/sysv.S (.eh_frame): Use .ascii, .string or error.

From-SVN: r159570