libgcc/
	* config.host (md_unwind_header) <i[34567]86-*-gnu*>: Set to
	'i386/gnu-unwind.h'
	* config/i386/gnu-unwind.h: New file.

Signed-off-by: Thomas Schwinge <thomas@codesourcery.com>
(cherry picked from commit 5e2eebc80d6eeca24745c27a925afdb64292ed22)