configure.ac (gcc_cv_as_cfi_directive): Disable cfi directives unless GCC and gas agree on using read-only .eh_frame...

	* configure.ac (gcc_cv_as_cfi_directive) [i?86-*-solaris*]:
	Disable cfi directives unless GCC and gas agree on using read-only
	.eh_frame sections for 64-bit.
	* configure: Regenerate.

From-SVN: r157151